Byzantine and Arab walls The first fortifications in what is now Heraklion were built by the
Byzantine Empire. The city was captured by Arabs in 824, and it became the capital of the
Emirate of Crete. At this point, they built a wall of unbaked bricks around the city, and surrounded it by a
ditch. The new capital became known as
Rabdh al-Khandaq (Trench Castle). After occupying the city, the Ottomans repaired and maintained its fortifications. The bastions were given
Turkish names, for example Martinengo Bastion became Giouksek Tabia. The walls were damaged by German aerial bombardment during the
Battle of Crete in
World War II, but the damage was repaired. The demolition was never carried out, and the walls remain largely intact, being among the best preserved Venetian fortifications in Europe. ==Layout==