The Benedictine Abbey and Church were founded on the island of Lokrum at the beginning of the 11th century. Only two fragments of the original pre-Romanesque church have been preserved while the latter Romanesque church of St Marys has retained a wall along with its three semicircular apses. In one of the apses, traces of frescoes can still be seen. A 16th century stone relief of the Annunciation has also been preserved. The Abbey opens up on the eastern side through a great Gothic biforium, while on the western side one can visit a Renaissance cloister with some late Gothic details.