Castello a Mare
Located in Palermo · History museum, Castle
Wikipedia
Castello a Mare or Castellammare (pronounced [kaˌstɛllamˈmaːre]) is an ancient fortress that guarded the entrance to the port at Palermo in La Cala. Extensive remains are visible, some of which are open to the public. There is a Norman keep, a fortified gate or entrance, and remains of a sophisticated Renaissance star-shaped defence.
The fortress gave its name to the city's historical district of Castellammare.