Kanli Kula was built by the Turks in 1539. The Venetians made various repairs and additions in 1687, soon after conquering Herceg Novi. Inside the castle there was a well preserved water
cistern. At some stage it lost its original purpose and became a prison, and was thereafter called “Bloody Tower“. The inmates left multiple drawings on the walls of the prison. The depicted ships were in service in 16th and 17th centuries, which allowed historians to date the founding of the prison. ==Cultural events==