The Church of St. Paul, today in ruins, is situated on inaccessible land in the village of Mulo, North-West of Kotor.
The Church is a single-nave building with an apse, rectangular on the outside and semicircular on the inside. The nave was probably vaulted with a barrel vault and covered, like the apse, with a gabled roof. With this shape, the church typologically fits into the group of single-nave buildings with flat (undecorated) wall surfaces.