Cittadella di Ancona (Fortezza del Sangallo)

The Cittadella rises on Astagno hill above Ancona and its harbour. Built from 1532 as a five-bastioned artillery fortress, it now combines military architecture with the green space of the Parco della Cittadella.

Why it matters

The fortress was one of the early artillery strongholds in the Papal States' Adriatic defences. Its position on Astagno hill commanded both the town and the harbour. Antonio da Sangallo the Younger is associated with its design, and its pentagonal plan and bastioned front reflect the military architecture of the sixteenth century.

What to notice

Five bastions — Guardia, Punta, Campana, Gregoriano and Giardino — are linked by curtain walls that trace the pentagonal perimeter. The Torraccia, a central keep, rises at the highest point. A network of underground passages runs beneath the hill. The Guardia bastion forms the entrance face, while the surrounding entrenched camp is now the Parco della Cittadella, where paths and trees occupy ground once shaped for military defence. Views from the park extend across the rooftops of Capodimonte toward the port.

Context and history

The fortress was built in 1532 as part of Ancona's modern defences against artillery. Military use continued into the twentieth century. Since 2008, the complex has also housed the Permanent Secretariat of the Adriatic-Ionian Initiative, an international body linking countries around the Adriatic and Ionian seas. Restoration work on the Guardia bastion accompanied this institutional use.