The Gate of St John

Identity

Eight Campaigns, One Complex

Centre of the south walls › the seam between Provence and England

Location & setting

Centre of the south (landward) walls of the Medieval Town of Rhodes, opening onto the road to the village of Koskinou; at the seam between the fortification sectors of the Langues of Provence and England, immediately west of the Bastion of the Langue of Italy (del Carretto).

Type

A Hospitaller gate-and-bastion complex of at least eight successive building phases (c. 1421–1521): an early quadrangular tower and gate (Fluvian), absorbed within superimposed twin-arch gates (Lastic/Milly, dated by inscription to 1457), a bastion (Zacosta), a chapel and gun gallery (Orsini), a massive external artillery bastion and barbicans (d’Aubusson), a guardhouse (Amboise) and thickened earthworks (del Carretto).

Also known as

The Gate of Koskinou; the “Kokkini Porta” (Red Gate); in Turkish, Kızıl Kapı. The complex absorbed the function of the older Gate of Akandia, which it superseded under Grand Master Lastic.

Heritage designation

Component monument of the “Medieval City of Rhodes” UNESCO World Heritage property (inscribed 1988, criteria ii, iv, v); protected under Greek Archaeological Law (ΥΑ 23084/737/1948; Law 3028/2002).

Present use

Standing monument within the conserved fortification circuit, administered by the Ephorate of Antiquities of the Dodecanese; its west barbican and adjoining moat counterscarp were restored during the 2000s, and the wall-walk approaching it from the Gate of the Cannons is conserved and open to visitors.

Architecture

From Tower-Gate to Bastion-Front Gate

Fluvian’s tower to d’Aubusson’s bastion › the fullest single illustration of the type on Rhodes

The Fluvian tower and the Baptist relief

The complex’s earliest element: a quadrangular tower, originally free-standing and open at the back, its south face dominated by a relief of St John the Baptist beneath the coat of arms of Grand Master Antonio (Anton) Fluvian — the key dated, attributed heraldic-sculptural group, and the source of the complex’s modern name.

The twin gates and the 1457 Kountis inscription

Lastic closed the tower’s back with a portcullis-secured gate bearing his own arms; Milly finished and tied the work to the tower’s foot, an event dated by a bilingual inscription naming master mason Manuel Kountis — one of the most precisely documented single building events anywhere in the complex.

Typological classification

Architectural-historical analysis situates the gate within a recurring morphology traceable to the archetypal castle-gate form — comparable to Hospitaller gatehouses at Krak des Chevaliers — read as the fullest single illustration on Rhodes of the evolution from tower-gate to bastion-front gate, recurring in simpler form at the Sea Gate and the Gate of St Paul.

The drawbridge and gun-ports

Fabric in the west barbican, restored 2000–2008, is identified as belonging to the drawbridge arrangements introduced under d’Aubusson’s post-1480 rebuilding; the mature bastion also carries a cordon moulding and low, splayed gun-ports allowing flanking fire to sweep the moat and the approaches to the gate.

The Chapel of St John

Built within the complex under Orsini (1467–1476) and subsequently altered, with further reinforcing works to its vault recorded under del Carretto; the direct source of the complex’s dedication. No standalone restoration narrative or condition record for the chapel is recorded in the sources available for this document.

History

The Eight-Phase Building Sequence

c. 1421–1521 › eight Grand Masters, roughly eighty years

Fluvian, 1421–1437

Built the original quadrangular tower, free-standing and open at the back, bearing his arms and the relief of St John the Baptist — the organised extension of the fortification on the city’s south and west sides.

Lastic, 1437–1454

Spurred by the unsuccessful Mamluk siege of 1444, closed the tower’s back with a portcullis-secured gate bearing his arms and began the eastward extension of the walls, replacing the older Gate of Akandia; died in 1454 before completing the eastern curtain wall.

Milly, 1454–1461

Completed and tied in Lastic’s work, dated by the bilingual inscription of 20 August 1457 naming master mason Manuel Kountis — recording what this project’s sources read as two superimposed gate structures.

Zacosta, 1461–1467

Built the first phase of the outer bastion, part of the wider mid-fifteenth-century shift toward artillery-resistant fortification; a newly consulted dissertation identifies this outwork as the fully evolved, most advanced example of its type on Rhodes.

Orsini, 1467–1476

Built the Chapel of St John within the complex, the direct source of its dedication; in 1472 appointed Pierre d’Aubusson superintendent of all the Order’s fortification works.

D’Aubusson, 1476–1503

From 1480, in the immediate aftermath of the great Ottoman siege, transformed the complex into a full bastion-front gate — a bulky polygonal outer bastion, moat counterscarp and western barbican with drawbridge. The new bastion reoriented an earlier Zacosta-period gate opening to face west, onto the Koskinou road — the origin of the gate’s alternative name.

Amboise, 1503–1512

Further works this project’s sources associate with a guardhouse adjoining the gate, continuing the refinement of the complex’s defences.

Del Carretto, 1513–1521

In the final years before the Ottoman conquest, thickened the bastion’s fabric and reinforced the vault of the Chapel of St John, part of a broader, late intensification of the town’s defences immediately ahead of the 1522 siege.

Testimony

A Dated Inscription, and Two Open Questions

1457 & after › Kountis’s own words, and what the sources leave unresolved

“Manolli Cunti, masterbuilder…”

The 1457 inscription is transcribed in full in this project’s principal source. Its Italian/vernacular text reads, in translation: “Manolli [Manuel] Cunti [Kountis], masterbuilder, has been protomastoras [master mason] of the whole new wall of Rhodes. For which reason, by leave of the Reverend Father in Christ, my Lord Frà Jacobo de Milly, Master of the Hospital of St John of Jerusalem, he has caused this inscription to be made, in the year 1457, on the 20th of August.” A parallel Greek text records the same event: “This wall of Rhodes was raised from its foundations and rebuilt, with Manuel Kountis serving as protomastoras.” The marble plaque was set at the precise point where Lastic’s new eastern wall, completed under Milly, tied into the older fabric at the foot of Fluvian’s tower — a join the excavators describe as “not entirely coincidental.”

The bilingual Kountis inscription, 20 August 1457, as transcribed in this project’s principal source.

An unresolved question: the older moat and the “porte bolevert”

Excavation revealed the terminus of an older, narrower moat predating Milly’s gate, its counterscarp continuing beneath the later Lastic-period wall. The excavators suggest this may belong to a separate, earlier defensive arrangement referred to in a 1465 document as a “porte bolevert,” located “quite close to the gate of Koskinou,” and walled up once the newer Milly-period wall was built. Whether this older arrangement was an early phase of the same complex or a distinct structure later absorbed into it is not fully resolved in the sources, and is reported here as an open question rather than settled.

Kasdagli & Manousou-Della, 1993/2000, this project’s principal source for the complex.

The old Gate of Akandia

To the east, the fortifications’ modifications are bound up with the abolition of an older gate, the Gate of Akandia, recorded in a 1452 document as standing at the exit of the town’s borgo, near the corner of the house of the Jewish master-builder Moses Vitali. This project’s principal source connects its decommissioning directly with Lastic’s campaign; the 2008 restoration volume independently corroborates the sequence via the 1457 Kountis inscription. Whether the old gate’s function was simply absorbed, or the two remained briefly concurrent, is not fully resolved and is reported here rather than settled.

Kasdagli & Manousou-Della, 1993/2000; corroborated in Manousou-Della & Dellas (eds.), 2008.

A shifting boundary: Provence and England

The gate’s position at the seam between Provence and England was not static. A 1465 statute assigned Provence the stretch west of the gate to the Aubusson bastion, with the stretch between St Athanasios and the gate assigned to Aragon; by the 1522 siege, England had taken over what had been Aragon’s section, so the gate’s immediate eastern neighbour in the final defence of the city was England rather than Aragon. This document follows this project’s own Moat Statement of Significance in presenting the boundary as a documented reassignment rather than a single, static arrangement.

This project’s Statement of Significance: Moat, Rhodes (2026), cross-referenced against Kasdagli & Manousou-Della, 1993/2000.

Story

The Battlepost of England

1522 › the siege’s last great set-piece assault, fought either side of this gate

The Battlepost of England

England’s post, anchored at its seaward end by the Koskinou Tower, was initially commanded by Florent de Givreau, who was killed at his post defending it; William Weston succeeded him as captain, survived the siege gravely wounded, and was sent away — reportedly for that reason — before the city fell, with John d’Aubin de Malicorne taking over the English post for its final months. Early in the bombardment this sector, like Aragon and England together, took the brunt of Mustafa and Piri Pasha’s heaviest batteries; on 10 August Juan de Barbaran (or, by another account, d’Homedes) was struck in the eye by an arquebus shot and forced to retire, one of several senior wounds on this stretch of wall during the opening weeks of close-range fire. Christoph Waldner von Freunstein commanded the Koskinou Tower itself through the siege’s hardest fighting.

The English sector saw the siege’s last great set-piece assault. On 29 November, after a mine widened an existing breach to a gap the chronicler says forty men could have ridden through abreast, waves of Ottoman troops stormed the gunports and traverses near the Koskinou Gate at the neighbouring Post of Provence for two nights running; and when the final assault came on 1 December — eleven thousand Turks thrown against the breach in a single day — it was repulsed, though at heavy cost on both sides: the non-Hospitaller Venetian captain Giovanni Antonio Bonaldi was nearly killed by a janissary’s scimitar in the fosse and saved only by Jacques de Bourbon’s timely intervention.

The 1522 siege of Rhodes — the final defence of the Posts of England and Provence, late November to 1 December.

The Most Inventive Engineering

Provence’s post, commanded by Romagne François de Fresnes, was the scene of some of Martinengo’s most inventive engineering. On 26 August his teams drove a countermine beneath the fosse at the foot of the Church of San Giovanni della Fontana, located and destroyed enemy sapping before it could bring down the wall, and packed the resulting tunnel mouths with gunpowder to injure or suffocate Ottoman miners working nearby. The Koskinou Gate, piercing this post, became the focal point of the siege’s climax at the end of November and beginning of December, as mine-widened breaches on both sides of the gate drew the heaviest Ottoman assaults of the entire siege and were, in the end, held.

The 1522 siege of Rhodes — the Post of Provence and the defence of the Koskinou Gate.

Conservation

The Moat Counterscarp, the West Barbican and the Earthwork of England

2000–2008 › genuine structural works, with a gap the sources report rather than fill

The moat counterscarp

Work continued and completed the reconstruction of a disarrayed part belonging to the first phase of the moat, predating the bastion’s extension under d’Aubusson, using traditional dressed-stone revetment masonry to retain the rising natural earth.

The west barbican

Its exterior façade, with cannon embrasures at three levels dated by a preserved coat of arms to d’Aubusson’s period, had suffered extensive corrosion from the poros stone’s exposure to wind; a mid-twentieth-century intervention was found to have erroneously reconstructed the lower zone’s embrasures and left the middle zone unfinished, so this work was removed and the embrasures restored from drawing documentation and in-situ traces, with decayed stones replaced by matched new poros blocks. A small lateral gate, blocked by fallen bedrock, was restored and then sealed.

The earthwork of the Langue of England

A major structural project addressed the directly adjoining earthwork, including a new retaining wall 25 metres long and 11 metres high, following a geotechnical study by the Aristotle University of Thessaloniki (Professor Kyriazis Pitilakis with Anastasios Sextos, 1999) and preserving the bipartite masonry configuration and the remains of fifteenth-century buttressing at the rear.

The 2003–2004 excavation

Archaeological excavation within the footprint of the neighbouring del Carretto bastion, directed by archaeologist Aggeliki Kosma, revealed a disused mid-fifteenth-century gate — put out of use in 1501 by del Carretto’s new bastion — independently corroborating both the 1457 Kountis inscription and the sequence by which the older Gate of Akandia was superseded.

A gap in the record

No condition report, materials analysis or restoration narrative is given in the 2008 volume for the Chapel of St John or for the gate’s own passage and superstructure — unlike the neighbouring Gate of Emery d’Amboise, which received a dedicated restoration narrative. This document notes the gap rather than resolving it.

Gallery

Photo gallery

Six views › the gate, its heraldry, the bridge and the moat

Assessment

Significance criteria

Nine-criteria framework › National to International importance

Rarity

A rare survival among Rhodes’s land fortifications: eight successive building phases tied, through heraldry, an archival document and a dated master-mason inscription, to precise individual Grand Masters across some eighty years — a level of phase-by-phase documentation this project’s principal source treats as exceptional. The survival of a named, dated inscription recording an individual master mason is itself a rare category of evidence.

High

Representativeness

Highly representative of the full evolutionary sequence of Hospitaller land-fortification design on Rhodes — from a free-standing quadrangular tower, through enclosure and doubling, to a mature bastion-front gate with drawbridge and moat counterscarp — most fully and legibly preserved here.

High

Aesthetic value

The massed bastion fronting a moat, the quadrangular tower bearing the Baptist relief beneath Fluvian’s arms, and the dated Kountis inscription together represent a considered combination of military engineering, devotional display and civic commemoration; the chapel’s present condition and legibility is not established in the sources, which qualifies a full assessment.

Moderate–High

Integrity

The bastion, moat counterscarp and west barbican received targeted, professionally documented restoration 2000–2008, removing unsympathetic mid-twentieth-century repairs — a real strength. Against this, no standalone restoration narrative for the gate’s own superstructure or the Chapel of St John is recorded, and the older moat/“porte bolevert” relationship remains an open question.

Moderate–High

Historical value

Outstanding historical value as physical, heraldic and epigraphic evidence of the Order’s fortification campaigns across eight Grand-Masterial magistracies spanning roughly eighty years, and as the site of one of the very few precisely dated, named-individual construction events — the 1457 Kountis inscription — anywhere in the Hospitaller fortifications of Rhodes.

Exceptional

Symbolic, spiritual & social value

As the bearer of a relief of St John the Baptist and its own dedicated chapel, combined with the arms of successive Grand Masters, the complex carries strong symbolic value at the town’s most militarily consequential landward threshold; its role as one of only four independently accessible points onto the wall-walk gives it continuing social and civic importance.

High

Scientific value

Substantial research potential for resolving the still-open questions of the older moat’s relationship to the “porte bolevert,” and of the precise relationship between the old Gate of Akandia and the evolving complex; the still-unpublished restoration record for the gate’s superstructure and chapel represents a further, specific opportunity.

Moderate–High

Interpretive potential

Strong interpretive potential as one of only four points formally identified for independent public access onto the wall-walk, and as a single monument through which visitors can trace the full evolutionary sequence from tower-gate to bastion-front gate, the layered patronage of eight Grand Masters, a named and dated master mason, and the unresolved scholarly questions this document deliberately presents rather than simplifies.

Moderate–High

Importance level

National to International significance, resting on status as the strongest and most complex single point on the town’s 1522 defensive perimeter, precisely phased across eight Grand-Masterial magistracies and anchored by a named, dated master-mason inscription — components underpinning the Outstanding Universal Value of the UNESCO-inscribed Medieval City of Rhodes.

National–International

Statement of significance

“Gate St. John was the Checkpoint Charlie of the Medieval City.” (This document’s own characterisation of the gate’s role as a continuously reinforced checkpoint governing the town’s most vulnerable landward approach, rather than a period inscription.)

The Gate of St John stands at the centre of the southern land walls of the UNESCO-listed Medieval City of Rhodes, on the road historically leading to the village of Koskinou, at the seam between the defensive sectors of the Langues of Provence and England and directly adjoining the Bastion of the Langue of Italy (del Carretto). It is of exceptional heritage significance as the most complex single point on the town’s 1522 defensive perimeter, its eight successive building phases precisely anchored by heraldry, an archival document and a dated, named master-mason inscription of 1457. That significance is inseparable from the gate’s strategic function: this project’s primary source for the complex describes it as the strongest and most complex point on the whole 1522 defensive perimeter, a judgment corroborated by a separate 1997 Ephorate planning study singling out the Gate of St John, alongside only the Palace of the Grand Master, the Naillac mole and the Gate of St Catherine, as one of just four points from which the wall-top walk is meant to be independently accessible. On this reading the gate was not simply a road entrance but an active, continuously reinforced checkpoint governing the town’s most vulnerable landward approach, a function this document treats as central to understanding why the Order fortified this point so intensively, across eight successive building campaigns culminating in the English and Provençal posts’ hard-fought defence of the breach beside this gate in the last weeks of the 1522 siege. Taken together, these qualities give the Gate of St John significance of National to International importance: a monument whose surviving fabric, heraldry and a rare, dated, named master-mason inscription together illuminate both the technical development of Rhodes’ land defences and the successive patronage of eight Grand Masters across some eighty years, and whose documented role as one of only four independently accessible points onto the town’s wall-walk gives it a further, continuing civic significance.

National

ΥΑ 23084/737/25-8-1948 — ΦΕΚ 10/23-9-1948 (Ministerial Decision declaring the monuments of the Medieval Town of Rhodes, including the Gate of St John, protected under Greek Archaeological Law), subsequently confirmed under Law 3028/2002.

UNESCO

World Heritage property: Medieval City of Rhodes (ref. 493), inscribed 1988, meeting criteria (ii), (iv) and (v). A contributing component monument of the property, together with Fort St Nicholas, the Palace of the Grand Master, the Great Hospital and the wider fortification circuit.

References

Kasdagli, Anna Maria, and Katerina Manousou-Della. “Νέες έρευνες στην οχύρωση της μεσαιωνικής πύλης του Αγίου Ιωάννη στην πόλη της Ρόδου” [New research on the fortification of the medieval Gate of St John in the town of Rhodes]. In Ρόδος 2.400 χρόνια, Proceedings, Rhodes, 24–29 October 1993, vol. 2, 327–340, pls. 129–132. Athens: Ministry of Culture, 22nd Ephorate of Prehistoric and Classical Antiquities / 4th Ephorate of Byzantine Antiquities, 2000. This project’s principal source for the Gate of St John, cited throughout for the eight-phase building chronology, the 1457 Kountis inscription, the Fluvian tower and Baptist relief, the Gate of Akandia sequence, the older moat and “porte bolevert,” and the Provence/England sector boundary.
Manoussou-Della, Katerina. “Towards a Project for the Comprehensive Restoration of the Monumental Complex of the Medieval Fortifications in the City of Rhodes.” In Proceedings of the 4th International Symposium on the Conservation of Monuments in the Mediterranean, Rhodes, 6–11 May 1997, vol. 4, 575–601. Athens: Technical Chamber of Greece, 1997. Cited for the identification of the Gate of St John as one of only four points of independent access to the town’s wall-walk, and for Kasdagli & Manousou-Della (1993/2000) as a methodological template for the wider restoration programme.
Manousou-Ntella, Katerina. Doctoral dissertation on the medieval fortifications of the city of Rhodes; chapters on gates, towers and outworks/bastions, newly consulted for this revision, supplied as a PDF excerpt without a title page. Cited for the identification of the Bastion of St John’s outwork as the fully evolved, most advanced example of its type on Rhodes, the gun-port and moat-sector detail linking it to the Langue of Aragon, the finding that the gate’s reorientation after d’Aubusson’s bastion is the origin of its alternative name (Gate of Koskinou), and two axonometric reconstruction drawings by G. Dellas depicting the gate’s successive building phases.
Manousou-Ntella, Katerina. “Μορφολογικά στοιχεία των μεσαιωνικών πυλών της πόλης της Ρόδου” [Morphological Elements of the Medieval Gates of the Town of Rhodes]. In Γλυπτική και λιθοξοϊκή στη Λατινική Ανατολή, 13ος–17ος αιώνας, edited by O. Gratziou. Rethymno/Heraklion: Crete University Press, 2007. ISBN 978-960-524-242-8. Cited for the typological classification of Rhodes’ medieval gates from tower-gate archetype to mature bastion-front gate, and for the three building-phase passages specific to the Gate of St John.
Manousou-Della, Katerina, and George Dellas (eds.). Medieval Town of Rhodes: Restoration Works 2000–2008. Rhodes: Ministry of Culture, Management Fund of Credits for Archaeological Projects Execution / Monitoring Committee of Works on the Monuments of the Medieval Town of Rhodes, 2008. Cited for the Bastion of St John chapter (moat counterscarp and west barbican), the East End of the Earthwork of England chapter, the del Carretto bastion chapter’s corroboration of the 1457 inscription and Gate of Akandia sequence, the wall-walk chapter, and the Gate of Emery d’Amboise chapter cited as a comparandum.
REBOOT Statement of Significance: Moat, Rhodes (2026) — cited for the 1465 and 1522 Battle Post/Langue sector assignments underlying the Provence/England seam, and for the existing description of the Gate of St John within the moat’s own fortification narrative.
REBOOT Statement of Significance: Gate d’Amboise, Rhodes (2026) — cited for the comparative typological note on the town’s bastion-front gates, and as the comparandum for the standalone restoration narrative absent for the Gate of St John’s own superstructure.
REBOOT Statement of Significance: Tower of Spain, Rhodes (2026) — cited for its reference to Manousou-Della’s “Medieval Fortifications of the City of Rhodes: Methodology and Principles of Interventions” (Thessaloniki conference, 2000), which illustrates its argument via the Bastion of St John; not independently consulted for this document beyond that reference.
REBOOT Statement of Significance: Fort St Nicholas, Rhodes (2026) — cited for a general reference coordinate for the UNESCO-listed fortification circuit.
UNESCO World Heritage Centre. “Medieval City of Rhodes.” World Heritage List, ref. 493. Inscribed 1988.
ICOMOS. ICOMOS Charter for the Interpretation and Presentation of Cultural Heritage Sites. Paris: ICOMOS, 2008.
ICOMOS Australia. The Burra Charter: The Australia ICOMOS Charter for Places of Cultural Significance, 2013.
Hellenic Government Gazette (ΦΕΚ). Ministerial Decision 23084/737 (25 August 1948), ΦΕΚ 10 (23 September 1948), declaring the monuments of the Medieval Town of Rhodes protected.