Peterskirche or St. Peter's Church in Innere Stadt is among the finest examples of Baroque churches in town. Built on a 4th-century church, it took three decades for its construction to complete and was designed by Johann Lukas von Hildebrandt. It began in 1701 and ended in 1733, and is also one of the oldest churches in the city. Inspired by The Vatican's St. Peter's Basilica, this magnificent structure is a wonderful sight to behold from the inside-out. Legend has it that Charlemagne established a church on this site in 792 BCE. There is a relief plague on the facade about Charlemagne and his works. Its beautiful interiors are displays of master handiwork in the form of frescoes, carved wood, golden stucco, ornate pulpit and altarpieces.