The Blue Cave is one of the most attractive in series of caves located on the peninsula Lustica, situated between the bay Zlatna luka (Golden Harbor) and cape Mokra gora (Wet Mountain). It is 5.7 nm far from Herceg Novi.

The Blue Cave is one of the most attractive in series of caves located on the peninsula Lustica, situated between the bay Zlatna luka (Golden Harbor) and cape Mokra gora (Wet Mountain). It is 5.7 nm far from Herceg Novi. 

It was named the Blue Cave because of its unusual blue color which is the result of the reflection of sun rays on clear sunny days.

During the period of the Venetian Republic rule, the island was known as Rondina. 

The island has a fort, built in 1853 by Austro-Hungarian general Lazar Mamula. The fort takes up about 90% of the island's surface area. Along with the fortification on Prevlaka's Cape Oštro as well as Arza fortification on Luštica's Cape Mirište, both of which were erected at the same time also on suggestion by general Lazar Mamula, fort Mamula was part of the Austro-Hungarian Army's contingency plans of preventing the enemy entrance into Boka Kotorska (Croatia).

During World War II, from 30 May 1942 onwards, the fascist forces of Benito Mussolini's Kingdom of Italy converted the Mamula fort into a concentration camp. Known for torture and cruelty to prisoners, the camp featured population from the neighboring area.

Our Lady of the Rock lies about 115 m (377 feet) northeast of the island of St. George. The stone plateau in the middle of the sea with a church on it is the result of the enduring efforts of generations of mariners “… to leave there, in the very heart of the Bay of Boka Kotorska, a testimony of their Christian faith and culture…”

The island was built artificially by scuttling old ships and depositing stones around a small crag.  The name of the island derived from the word skrpjel– an old word for a crag.  The construction of a sanctuary began in the first century of the Venetian rule.  The sanctuary was dedicated to the Assumption of the Virgin because this cult (Assunzione della Vergine) was greatly venerated by the Venetians.

 The original church was built in the mid-15th century and was of modest proportions. Over the centuries, the “island” was constantly enlarged and reinforced by both deposits of stones and scuttled sailing ships until it provided a sufficient base for a bolder architectural undertaking. Most of the present-day church was erected after the great earthquake of 1667 when the original sanctuary was destroyed.  It is a single-nave, modestly proportioned church in the Byzantine style. An octagonal 11m domed presbytery and a bell tower were added circa 1725. These gave the Our Lady of the Rock the distinctive baroque appearance that can be seen today. The interior of the church was decorated by Tripo Kokolja, a famous 17th-century painter from Perast. On the altar is the famous icon of Our Lady of the Rock, a 15th century work by Lovro Marinov Dobricevic.  It is the most valuable work of art in the church because its history is so closely related to that of the island.