Concerts are held in St. Katharine's, and open-air theater takes place in the Burgruine Landskrone, the 12th-century imperial fortress ruins. From here there's a wonderful view of the town and the vineyards, extending all the way to Worms on a clear day. The castle ruins are northwest of the church. Follow the Dalbergerstrasse north; from there it's a short walk up to the ruins. For tickets to the open-air theater performances contact the Oppenheim tourist office.
Oppenheim, 55276, Germany