Two hundred metres north of the cathedral is one of Trani's major landmarks, the vast, almost modernist Swabian castle built by Frederick II in 1233. Charles V later strengthened the fortifications and it was used as a prison from 1844 to 1974. While the moat is now dry, the ingenious engineers originally devised a system allowing the level of seawater in it to be precisely controlled.
Castello
Trani