St Peter's Abbey
If you only have time to visit one of Salzburg's many lovely churches, make sure its the 9th century St Peter's Abbey Church (Stiftkirche St Peter), one of Salzburg's most impressive Rococo buildings. The Peterskirche was built at the beginning of the 18th century, on the foundations of the former church, which was founded in 792. The ornate interior is more impressive than the exterior, with high marble pillars and a magnificent frescoed ceiling. The ancient catacombs that were carved into the rock face by the early Christian inhabitants are accessible only through a short guided tour, which is well worth the effort. The caves, only partly used for burial purposes, include two rock-hewn chapels.