Geoagiu Rotunda

The Rotunda — Geoagiu's Romanesque chapel — is a round church with an apse to the east, built almost entirely of reused Roman brick taken from an older building on the same spot. The nave is 5.5 m across inside and the whole building is 9.5 m long. It is thought to have been raised in the late 11th century by the Ákos noble family, who then held Geoagiu.

Excavations in 1993–2004, led by Gheorghe Petrov, uncovered more than 200 graves around and inside the church; the oldest date from the reigns of kings Ladislaus I (1077–1095) and Coloman (1095–1116), so the rotunda already stood by the end of the 11th century. A local legend links it to the Knights Templar. Services are no longer held there and it is visited as a museum; a few metres away stands the Gothic Reformed church, with Roman reliefs in its walls.