Ruins of the Church of St. Maurus are situated in the Eastern part of the Island of Lopud, at the place of Poluga. The Church was built probably in the 11th century, while first known written documents that mention the Church date from 1281 and 1284.
The remains of the Church are preserved to a height of about 3 m, mostly on the north wall. Its a single nave edifice of trapezoidal shape with semicircular apse and divided interior into three bays with lesenes.