Kanli Kula Castle, whose name means "blood tower", is one of the most beautiful open theaters in Montenegro. It hosts many music, film and theater festivals, making Herceg Novi widely known. This castle was formerly used as a prison during the time The city was occupied by the Ottomans after its construction in the mid-16th century, which gave it that bloody name, and today it offers stunning panoramic views and cool sea breezes during the summer months.