Mamula is strategically located between Prevlaka and Luštica peninsulas on the entrance to the Boka Kotorska bay. This small islet is of circular shape, and is 200m in diameter. It is 3.4 nautical miles (6.3 km) away from Herceg Novi.
There is a fort on the island, built by Austro-Hungarian General Lazar Mamula in the mid-19th century. During World War II, the fort was used as a prison by Italians from May 30, 1942 onwards. The prison was known for torture and cruelty to the prisoners.
While the fort has deteriorated the island is still visited by boats, mainly from Herceg Novi, and is a popular one-day trip destination. The island beaches are very pleasant.