A defiant defender still stands proudly on the hill overlooking Euripus Strait and the entire region, with Sultan Karababa buried deep in its embrace, to whom it owes its name. The castle was built by the Ottomans in 1684 and had a long and narrow courtyard, three bastions, and a large tower, in order to protect the city from the Venetians. Currently it is home to a museum that displays intricate 15th century coats of arms, church and secular building decorative reliefs, inscriptions, and Arabic funerary dedications.