Carolingian and Romanesque frescoes, Church of the Benedictine Kloster St. Johann (Benedictine Convent of St. John), UNESCO World Heritage Site, Mustair, Graubunden, Switzerland, Europe

Carolingian and Romanesque frescoes, Church of the Benedictine Kloster St. Johann (Benedictine Convent of St. John), UNESCO World Heritage Site, Mustair, Graubunden, Switzerland, Europe

Carolingian and Romanesque frescoes, Church of the Benedictine Kloster St. Johann (Benedictine Convent of St. John), UNESCO World Heritage Site, Mustair, Graubunden, Switzerland, Europe

Fresco in St. John's church, Carolingian frescos, Muestair cloister, Muestair, UNESCO World Heritage Site Muestair, Engadin, Grisons, Switzerland

Carolingian octagon, Aachen Cathedral, UNESCO World Heritage Site, Aachen, North Rhine Westphalia, Germany

Interior shot of St. John's church with altar and Carolingian frescos, cloister Muestair, Muestair, UNESCO World Heritage Site Muestair, Engadin, Grisons, Switzerland

Monastery Lorsch, Carolingian Kings hall, Hesse, Germany

Basilica of St. George, a late Carolingian and Ottonian building in Oberzell, Isle of Reichenau, Lake Constance, Konstanz district, Baden-Wuerttemberg, Germany, Europe

Late Carolingian and Ottonian constructed Basilica of St. George in Oberzell, Reichenau Island, Lake Constance, Konstanz district, Baden-Wuerttemberg, Germany, Europe

Golden bust of Charlemagne on display in the Domschatzkammer, the Treasury of Aachen Cathedral, Aachen, Germany

Interior of the octagonal Palatine Chapel, built by Charlemagne, Aachen Cathedral (Kaiserdom), Aachen, Germany

Königshalle or Torhalle (King's Hall or Gatehouse) to the Abbey and Altenmünster of Lorsch, Lorsch, Germany

Königshalle or Torhalle (King's Hall or Gatehouse) to the Abbey and Altenmünster of Lorsch, Lorsch, Germany

Lorsch Carolingian gatehouse, Hesse, Germany