Great Castle Sieges of History
Every great castle was tested eventually. The ones that held — Krak des Chevaliers for nearly two centuries, Edinburgh through six sieges — defined the limits of contemporary attack technology. The ones that fell often fell in ways that revealed a specific weakness: the latrine chute at Chateau Gaillard, the undermined wall at Rochester, the unguarded cliff at Edinburgh. Walking any surviving fortification with a specific siege in mind transforms the architecture from a general statement about power into a record of a specific military event. The castles below are on the map.
Jerusalem, 1099
The First Crusade's siege of Jerusalem in July 1099 was the defining event of the Crusader enterprise. The city's walls — Roman and Byzantine in origin, maintained by the Fatimid garrison — were attacked across multiple points. The decisive breach came when the Crusaders deployed siege towers on the north wall; Godfrey of Bouillon's tower reached the parapet on 15 July, and the garrison was overwhelmed. The subsequent massacre of the Muslim and Jewish inhabitants was recorded by both Crusader and Arab sources and defined the character of the conquest in the Islamic world's memory.
Rochester Castle, 1215
King John's siege of Rochester Castle in the autumn of 1215, mounted against rebel barons who had taken it after Magna Carta's signing, is one of the most technically instructive sieges in English medieval history. The castle's Norman keep resisted battering for weeks. John's engineers then mined the south corner of the keep's foundations, packing the tunnel with the fat of 40 pigs to fire the props. The corner collapsed; the keep's interior was split but the garrison retreated to the undamaged half and held for a further seven weeks. The fallen corner was subsequently rebuilt as a round tower — visible today as the anomalous circular element in the otherwise square Norman keep. It is a physical record of the siege preserved in the masonry.
Krak des Chevaliers, 1271
Krak des Chevaliers, the Hospitaller castle in Syria, was the most powerful fortress in the Crusader states and successfully resisted every attack from its construction in the 1140s until 1271. The Mamluk Sultan Baybars, having systematically reduced the other Crusader positions in Palestine and Syria, reached Krak in February 1271. He took the outer ward by assault within a week — the garrison of roughly 200 knights and men-at-arms was too small to hold the full perimeter. The inner citadel held; Baybars reportedly had a forged letter delivered to the garrison purporting to come from the Grand Master of the Hospitallers, granting them permission to surrender. The garrison agreed terms and withdrew safely to Tripoli. The fall of Krak, whether by military force alone or assisted by the letter, ended the Hospitaller presence in inland Syria.
Stirling Castle, 1304
Edward I of England's siege of Stirling Castle in 1304 is among the most documented medieval sieges in Britain. The garrison, under William Oliphant, held for three months against the largest siege train Edward had assembled. Edward deployed his great trebuchet, "Warwolf," at Stirling — the largest counterweight trebuchet known to have been built in medieval England. When Oliphant offered to surrender before Warwolf was ready, Edward refused: he wanted to use the machine. The castle was battered for one day after the garrison's final submission, solely to test the device. The castle surrendered; Edward had made his point about English military capacity.
Orléans, 1428-29
The English siege of Orléans was broken by a French relief force in May 1429, principally associated with Joan of Arc. The English had invested the city from the south bank and with a series of boulevard fortifications on the north; the Loire itself was the contested axis. Joan's contribution was military and psychological: she led the assault on the English fortifications in the final days with a personal energy that the French relief force had previously lacked. The battle of Patay, which followed the lifting of the siege, destroyed the English field army and effectively ended English military dominance in northern France.
Harlech Castle, 1461-68
Harlech Castle in Gwynedd, built by Edward I from 1283, was the last Lancastrian stronghold in England and Wales during the Wars of the Roses. It held for seven years — 1461 to 1468 — after the rest of England had accepted Yorkist rule, the garrison supplied by sea through the castle's water gate while English land forces could not bring it down. The final surrender came through starvation and Welsh bardic tradition records the episode in the song Men of Harlech. The water gate and its sea approach, no longer usable since the coastline has changed, can still be seen descending from the castle to the now-receded shore.
Famagusta, 1570-71
The Ottoman siege of Famagusta in Cyprus, begun in the summer of 1570, lasted eleven months against a Venetian garrison of approximately 7,000. The walls, built to the latest trace italienne design with low angled bastions, resisted systematic bombardment for the full period. The commander Marcantonio Bragadin negotiated terms for a safe withdrawal; the Ottoman commander Lala Mustafa Pasha reneged on the agreement, tortured and executed Bragadin, and had his skin stuffed and displayed. The fall of Famagusta effectively ended Venetian Cyprus.
Siege Lessons
Each of these sieges contains a specific technical lesson: about the limits of a particular wall type, about the vulnerability of a particular point in a particular defences plan, about the role of supply and time. Walking the surviving fortifications with the specific siege in mind — Rochester's anomalous round corner, Harlech's water gate, Krak's inner citadel — makes the general military history concrete.
Explore on the map
Every castle mentioned in this article is on the interactive map. The Crusader castle landscape, the English and Welsh medieval fortifications, and the Venetian Mediterranean outposts each form coherent regional groups within the broader global map.