The Aragon Castle is situated at the angle of the canal , Big Sea , and Piazza Castello .
Situated at the angle of the canal and Big Sea , the Aragon Castle was built between 1486 and 1492 by orders of King Ferdinand II of Aragon with the intention to protect the city from the Turks ' frequent raids.  -- Castle The castle which was designed by Italian painter and architect Francesco di Giorgio Martini replaced a pre-existing fort which was deemed unfit for 15th century warfare .
Taranto