Castello Aragonese di Otranto

Facing Otranto's harbour, the Castello Aragonese is a late-fifteenth-century fortress with a roughly quadrilateral plan, round artillery towers, moat and drawbridge. Its successive defences preserve the changing military architecture of the sixteenth century, and its name later became famous through Horace Walpole's 1764 novel, The Castle of Otranto.

Why it matters

The fortress rose after the destruction of Otranto's earlier defences in 1480. Its original form, with four circular corner towers, followed principles associated with the military treatises of Francesco di Giorgio Martini. Sixteenth-century modifications added new layers of defence as artillery developed, making the castle a record of changing siege architecture.

What to notice

Three of the four circular towers survive. Their chambers have hemispherical carparo domes designed to house bombards. A triangular mid-sixteenth-century bastion contains a hall roofed with three intersecting pavilion vaults. The façade bears the arms of Charles V, while a ground-floor chapel preserves a tomb inscription for Donna Teresa De Azevedo, who died in 1707. Tunnels and galleries below the fortress preserve further evidence of its construction phases.

Context and history

After the 1480 attack, the fortress was rebuilt at the end of the fifteenth century and adapted through the sixteenth century with reinforced facings, a triangular bastion and a seaward spur. Under Spanish rule, Charles V's coat of arms and the records of Spanish castellans marked the castle's imperial role. In 1764, Horace Walpole used the castle's name for the work now recognized as the first Gothic novel, giving Otranto's fortress a literary afterlife beyond its military history.