Patronal feast: June 29th.
The church ruins date back to the 5th century AD. The building reminds of church buildings in Aquileia and Milan. During excavations, the old position of the altar as well as the relic chamber could be determined. The S. Peter ruin in Altenburg is probably the oldest Tyrolean church ruin. Its decay began with the closure of the church in 1782.
Source: Parish office Kaltern