Eight Phases, Eighty Years, One Gate
South walls, Koskinou road › boundary of the Posts of Provence and England
From an Isolated Tower to a Gunpowder Bastion
Fluvian’s tower to d’Aubusson’s bastion › eight phases read directly from the fabric
Seven Grand Masters, One Building Programme
1421–1521 › each phase dated by surviving heraldry
“The Strongest Point of the Enceinte”
Kasdagli & Manoussou-Della, 1996 › a dedicated structural and historical survey, and what it does not cover
The 1996 study — undertaken specifically because acute structural danger at this complex called for shoring and restoration, and accordingly combining documentary, heraldic and archaeological evidence with a full structural survey — describes the Tower of St John as “perhaps the most characteristic nodal point for the identification of transitional defensive forms” in the whole Rhodian enceinte: a judgment framed by the authors’ own direct structural survey of the fabric, and the basis this document uses for an Exceptional representativeness rating, not awarded lightly.
By the decisive Ottoman siege of 1522, the Tower of St John was, per the dedicated academic study, one of at most three land gates on the landward defences still operational, and was “regularly in the thick of the fighting.” The city’s capitulation later that year is attributed in the same study not to any structural failure of defences such as this one, but to the exhaustion of the defenders’ gunpowder.
This document draws principally on the 1996 study, supplemented by Katerina Manousou-Ntella’s 2013 doctoral dissertation and her related 2007 book chapter on the medieval gates of Rhodes town. Two of these three sources share a lead author — Katerina Manousou-Ntella and Manoussou-Della are the same scholar, her name appearing with both transliterations across her publications — and so do not constitute fully independent corroboration in the strictest sense. Her sustained, multi-decade, structurally-grounded study of this one monument nonetheless represents an unusually deep evidentiary base by the standards of this project.
The source document’s own table of contents lists further subsections — on the Grand Master’s Garden, the bastion as a heritage landscape today, Ottoman repair and nineteenth-century damage, a 2000–2015 restoration programme, the bastion’s functional reintegration, and a 2011–2015 restoration culminating in a 2017 Europa Nostra award — none of which appear in the body text supplied for this document. This Statement is built from the text actually delivered, and notes the gap rather than inventing the missing narrative.
Who Am I?
A first-person telling › the tower’s own eighty-year story, in its own voice
I was born in the year 1421, out of a block of pale Rhodian stone, on the highest ground anyone could find at the southern edge of a walled town by the sea. A man named Antoni Fluvian made me. He was the Grand Master of a whole order of warrior-monks called the Knights of Saint John — and he had big plans for the little town of Rhodes. He raised me up as a tall, square tower, open at the back like a cupboard with no door, so that if an enemy ever somehow got inside me, my own friends on the wall could still see straight through. Over my front door he carved his own coat of arms, so everyone would know who had built me. And right beside it, he carved a picture of a man with wild hair and a cloak made of animal skin: Saint John the Baptist, the patron saint of the whole Order. That is where I got my name. I am the Tower of Saint John.
I did not know it yet, but I would spend the next eighty years growing up. First came Jean de Lastic. He built a wall across my open back and fitted it with a spiked iron gate called a portcullis, which could drop down like a row of teeth to block anyone from getting through. People started calling that gate the Porte Bolevert. Lastic also built me a twin — a second tower just to my west, wearing his own coat of arms instead of Fluvian’s.
Then came Jacques de Milly, who finished the whole stretch of new wall around us in the year 1457. The stonemasons were so proud of their work that they carved an inscription into the stone, naming the master builder himself: Manolis Kountis. You can still read his name today, carved in two languages, nearly six hundred years later.
Then came Ramon Zacosta, who wrapped a five-sided wall called a bulwark around me, with little platforms partway up for soldiers to stand on with their crossbows and early guns. Zacosta’s bulwark was so wide that anyone wanting to reach my front gate could no longer walk straight at me — they had to detour around, which is exactly what Zacosta wanted. A tower that is hard to even walk up to is a tower that is hard to attack.
Then came Giambattista degli Orsini, who finally joined me to the rest of the great wall with a two-storey platform built for cannons, arching right over the top of Lastic’s old gate passage. For the first time since I was built, I was not standing alone anymore. I was part of something enormous.
In the summer of 1480, a vast army arrived by sea. Tens of thousands of Ottoman soldiers surrounded Rhodes, dragging cannon taller than houses, determined to take the city by force. I watched, and I waited, and I listened to the thunder of their guns — but that time, the worst of the fighting happened somewhere else, at a fort called Saint Nicolas, guarding the harbour, and at another tower by the windmills. Those two held firm under bombardment so fierce it amazed everyone who saw it, and the invaders finally sailed away, defeated.
The Grand Master who led that victory, a knight named Pierre d’Aubusson, understood something important: cannon were going to change everything about how walls needed to be built, forever. So afterward, he came to me. He wrapped me in an enormous new outer wall called a bastion, thick enough to shrug off cannonballs, with a brand-new outer gate, a drawbridge, and a stone bridge crossing a deep new ditch. He even turned my old front wall into a gun platform of my own. I had grown from a single lonely tower into a small fortress in my own right.
Two more Grand Masters kept working on me after that. Emery d’Amboise built a little guardhouse beside my gate. And Fabrizio del Carretto, the last to work on me, thickened my walls even further and reinforced the stone ceiling of my chapel so it could bear the weight of all the earth now piled on top of it for the cannon to stand on. In the year 1520 — just two years before I would need it most — a builder named Basilio dalla Scuola came and made his own final repairs to my gun openings, so they could fit the newest, most powerful cannon of the age.
Nobody told me so in words, but by then I understood. I had not been built to look beautiful, though I was. I had not been built to be tall, though I was that too. I had been built, stone by stone, gift by gift, for eighty years, by seven different men who would never meet each other, for one single reason: because someday, someone was going to try to break through me, and when that day came, I needed to be ready.
The day came in 1522. Suleiman the Magnificent, the most powerful sultan the Ottoman Empire had ever had, brought a force so large that the old soldiers of 1480 would hardly have believed it. This time, his engineers studied the walls of Rhodes carefully first — and they picked me.
By then, I was one of only three gates in the whole landward wall still strong enough to be useful at all. The old stories written about that siege say plainly that my post “was regularly in the thick of the fighting.” I do not need to exaggerate what that meant. Cannonballs struck my walls so often that, centuries later, archaeologists digging inside my oldest breastwork — the very first stones Fluvian ever laid — found a pile of stone cannonballs still sitting exactly where they had struck, half-buried in the rubble, waiting for someone to find them.
Soldiers fought and bled at my gate for months. The ground in front of me shook from gunpowder mines dug under my walls by enemy sappers, and from the counter-mines the knights dug back to stop them. Through all of it — everything that eighty years of seven Grand Masters had built into me — I held. I did not fall. Not one stone of me gave way to the enemy. And yet the city fell. But I am still here.
So, the next time someone tells you that a thing took too long to build, or that growing stronger takes too many small steps, you can tell them about me. It took eighty years and seven different builders, none of whom lived to see the day it would matter, to make me strong enough for one single night in 1522. And when that night came, I was ready.
What the 1996 Survey Found Underground
Archaeology beneath the bastion › two moats, stone shot, and a gap the sources do not fill
Photo Gallery
Five views › the tower, its setting, and the gate and bridge it anchors
Significance Criteria
Nine-criteria framework › International importance
Statement of significance
“Perhaps the most characteristic nodal point for the identification of transitional defensive forms… the strongest point of the enceinte.” (Kasdagli & Manoussou-Della’s own structural and historical assessment of the complex, 1996 — not a period inscription.)
The Tower of St John — known also as the Gate of Koskinou or Kizil Kapou, the “Red Gate” — is a Hospitaller-period fortified gate-and-tower complex on the south stretch of the Medieval Town of Rhodes’ fortified circuit, at the boundary between the Order’s Tongues of Provence and England, giving access to the road to Koskinou. Begun in 1421 under Grand Master Antoni Fluvian, whose coat of arms and a relief of St John the Baptist mark the original tower’s south face, the complex was progressively enclosed and strengthened over some eighty years by six further Grand Masters — Lastic, de Milly, Zacosta, Orsini, d’Aubusson, d’Amboise and del Carretto — each phase precisely dated by surviving heraldry, culminating in d’Aubusson’s massive outer bastion, drawbridge and stone bridge built after the Great Siege of 1480. By the decisive siege of 1522 the complex was, per the dedicated academic study, one of at most three land gates still operational and “the strongest point of the enceinte,” regularly in the thick of the fighting before the city’s eventual capitulation. Taken together, this history gives the Tower of St John significance of International importance as a named component of the Outstanding Universal Value of the UNESCO-inscribed Medieval City of Rhodes under criteria (ii), (iv) and (v), resting on an unusually strong evidentiary basis among the monuments documented in this project: a dedicated peer-reviewed structural and historical study, corroborated by a doctoral dissertation and a further book chapter, notwithstanding their shared lead authorship.
ΥΑ 23084/737/25-8-1948 — ΦΕΚ 10/23-9-1948 (Ministerial Decision declaring the monuments of the Medieval Town of Rhodes, including the Tower of St John, protected under Greek Archaeological Law), subsequently confirmed under Law 3028/2002.
World Heritage property: Medieval City of Rhodes (ref. 493), inscribed 1988, meeting criteria (ii), (iv) and (v). A contributing component monument of the property, alongside the Palace of the Grand Master, its Bastion, the Bastion of St George, the Gate of the Arsenal, and the Moat of the Medieval Town of Rhodes.
References
- Kasdagli, Anna-Maria, and Katerina Manoussou-Della. “The Defences of Rhodes and the Tower of St John.” Fort: The International Journal of Fortification and Military Architecture, Vol. 24 (1996), pp. 15–34. Fortress Study Group; peer-reviewed. Read in full for this document (offprint supplied for this project). The primary source for this Statement: the complex’s eight-phase, eighty-year building chronology under seven successive Grand Masters, its architectural features, its role as the strongest point of the enceinte in the siege of 1522, and the archaeological findings of the 1996 conservation-led survey.
- Manousou-Della, Katerina. “Medieval Gates in Rhodes Town: A Morphological Analysis” [Greek: “Μορφολογικά στοιχεία των μεσαιωνικών πυλών της πόλης της Ρόδου”]. In Olga Gratziou (ed.), Sculpture and Stone-Carving in the Latin East, 13th–17th century [Γλυπτική και Λιθοξοϊκή στη Λατινική Ανατολή, 13ος–17ος αιώνας]. Rethymno/Heraklion: Crete University Press, 2007, pp. 218–243. Peer-reviewed book chapter, already held by this project and used for its Gate of the Arsenal Statement. Consulted here for its independent description of the complex as the most characteristic pylon arrangement reproducing patterns of the Order’s past in the Latin East, comparable to Krak des Chevaliers, and for its corroboration of the complex’s identification as the “Red Gate”/Gate of Koskinou and its Fluvian-period heraldic dating.
- Manousou-Ntella, Katerina. “Η πόλη της Ρόδου κατά τους μεσαιωνικούς χρόνους” [“The City of Rhodes in the Medieval Period: The Transformation of the Fortifications from Late Antiquity to the Hospitaller Fortified City (7th c.–1480)”]. PhD dissertation, National Technical University of Athens, School of Architecture, October 2013. Pages 244–250 (as paginated in the copy consulted) read for this document. Consulted for further technical and archaeological detail, including the sequence of early moats and bulwarks revealed by excavation and the later infilling of the central tower under d’Aubusson and Orsini; the author is the same person as “Manoussou-Della” above, the difference being alternative transliterations of her Greek surname.
- Abercrombie, G.E. The Hospitaller Knights of St John in Rhodes 1306–1522, Military. Barnsley, UK: Pen and Sword, 2024.
- Nossov, K. The Fortress of Rhodes 1309–1522. Osprey Publishing, 2010.
- 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. Burwood: ICOMOS Australia, 2013.
- Hellenic Government Gazette (ΦΕΚ). Ministerial Decision 23084/737 (25 August 1948), ΦΕΚ 10 (23 September 1948); Law 3028/2002 on the Protection of Antiquities and Cultural Heritage in General.
- REBOOT Statement of Significance: Gate of St John, Rhodes (2026) — a separate Statement of Significance for what this document’s sources identify as the same gate-and-tower complex, built from a different source document with its own distinct building chronology and a dedicated narrative section on the Posts of England and Provence in the 1522 siege. This document does not attempt to reconcile the two; both are presented as supplied by their respective sources.