In the western depths of Lake Constance lies Reichenau Island, a place where time slows down and history speaks through stone. Renowned as a UNESCO World Heritage site, the island was once one of the most influential cultural, political, and religious centers of the Holy Roman Empire. At its heart stands its crowning architectural jewel: the Münster St. Maria und Markus (The Cathedral of St. Mary and St. Mark), the former monastery church of the Benedictine abbey.​Stepping into this sacred space is not merely a sightseeing stop; it is an immersive journey back to the Early Middle Ages.