The Church of St. Peter in Zavala is situated on the Western rim of Popovo Polje, 50km to the West of the town of Trebinje. It is first mentioned in the written sources from the 16th century.
The original appearance of the Church of St. Peter in Zavala is interpreted in two ways: as an example of a building with four pillars, like the Church of St. Mikula in Split (Tihić / Basler) or as a single-nave building (Jovanović). The church is known for its sculptural decoration dated to the 9th and the 10th centuries, however fragments of the altar screen undoubtedly point to the conclusion that the Church of St. Peter in Zavala was built probably in the 11th century.
Researchers believe that the sculptural decoration belonged to the original church (which indicates that the remains of today's church are of a much later date) or they were transferred from the church, the remains of which were found beneath the katholikon of the nearby Monastery of Zavala.
Remains of the alter screen with motifs of the Eucharist, ambons and tombstones are kept at the Museum of Hercegovina in Trebinje. Most fragments have different geometrical ornaments and images of birds that symbolise the Eucharist.