Bamberg owes its espiscopal status to a pious imperial couple: Emperor Heinrich II. and Empress Kunigunde founded the bishopric as a place of contemplation and intercessionary prayer.The ruler brought about the foundation of the Bishopric of Bamberg at an Imperial synod in 1007. Bamberg's history as a diocese thus goes back over a thousand years. The heart of the episcopal town is the Imperial Cathedral of St. Peter and St. George which boasts four spires and goes back to the foundation of Emperor Heinrich II. The most important sights include the tomb of the imperial couple and the papal tomb of Clemens II, the only one north of the Alps to have been recognised by the Vatican.