Introduction to the Triangular Castle: The Triangular Castle is located on the other side of the river. It is named because the walls of the castle are triangular. The castle was built by the Venetians around the end of the 15th or early 16th century AD. Its main buildings are a watchtower in the southwest corner and a conical-roofed house within the walls. This conical-roofed house is said to be a steam bath built by the Turks later.