The Monastery of St. Anastasia is situated on the island of the same name in the Black Sea bay of Bourgas, located 6.5 km southeast of Bourgas and about 1.5 km from the nearest dry-cape Chukalya. The island is built of volcanic rocks, the height is twelve meters, its area is 0.022 sq. km.

The small island, and especially the monastery, has a rich history dating back thousands of years. It has not remained aside from both the sea storms and the political conflicts, beginning in antiquity and going through the Middle Ages to reach the stormy twentieth century and the current twenty-first century.

From the finds found on the island and in its aquarium, dating back to the late antiquity and the early Middle Ages, it may be assumed that the monastery originated as a monk's skirmish when the Church had a common history.