The fortifications of Chania are a series of defensive walls and other fortifications which surround the city of Chania in Crete, Greece. The inner city walls were first built in antiquity, and were rebuilt by the Byzantine Empire. The outer walls were built in the 16th century by the Republic of Venice. Some of the fortifications were demolished in the 20th century, but parts of both the Byzantine and Venetian walls remain intact.

Layout

The fortifications of Chania were roughly square in shape, and the corners were reinforced by the following bastions:

• San Salvatore Bastion (also known as Gritti Bastion), on the northwest corner
• San Dimitrio Bastion (also known as Schiavo Bastion or Lado Bastion), on the southwest corner
• Santa Lucia Bastion, on the southeast corner
• Mocenigo Bastion (also known as Sabionera Bastion), on the northeast corner

The Firkas Fortress is located close to San Salvatore Bastion.

There were also three main gates:

• Porta San Salvatore, on the west side
• Porta Retimiota, on the south side
• Porta Sabbionara, on the east side

The walls were up to 20 m (66 ft) high, and were surrounded by a ditch which was 60 m (200 ft) wide and 15 m (49 ft) deep.