Three centuries of construction, the result is more than impressive. Completed in the 16th century, Regensburg’s St. Peter’s Cathedral impresses with its French Gothic elements and the 32-metre-high vault that extends over the entire nave. Also worth seeing are the medieval stained glass windows and the depiction of St Peter in the southern transept dating from 1325. The characteristic spires were added later, by order of the Bavarian King Ludwig I in 1869. As the main and episcopal church of the diocese of Regensburg and part of the ensemble “Old Town Regensburg with Stadtamhof”, Regensburg Cathedral has been a UNESCO World Heritage Site since 2006.