UIG1566391: Passage Along the Cloister in the Mainzer Dom (Mainz Cathedral Or St. Martin's Cathedral), Mainz, Germany (photo) / Bridgeman Images

UIG1566437: Porta Nigra Roman Gateway, Trier, Rhineland-Palatinate, Germany (photo) / Bridgeman Images

UIG1566253: The Great Coastal Gate, Tallinn, Estonia (photo) / Bridgeman Images

UIG1566402: Virgin and Child Statue on A Half-Timbered House on the Kirschgarten, Mainz, Germany (photo) / Bridgeman Images

UIG1566393: Passage Along the Cloister in the Mainzer Dom (Mainz Cathedral Or St. Martin's Cathedral), Mainz, Germany (photo) / Bridgeman Images

PFH3614474: Italy: Bronze central entrance door, Cathedral of Saint Mary of the Assumption (Duomo di Siena), Siena / Bridgeman Images

PFH3614477: Italy: Saints and horse, facade right, Cathedral of Saint Mary of the Assumption (Duomo di Siena), Siena / Bridgeman Images

UIG1565139: Pilgrim's Pulpit at St. Stephen's Cathedral, Vienna (Wien), Austria (photo) / Bridgeman Images

UIG1565015: St. Sofia Church, Sofia, Bulgaria (photo) / Bridgeman Images

UIG1565131: Interior of St. Stephen's Cathedral, Vienna (Wien), Austria (photo) / Bridgeman Images

UIG1566447: Porta Nigra Roman Gateway, Trier, Rhineland-Palatinate, Germany (photo) / Bridgeman Images

UIG1566325: Crucifix in the Old Town of Tallinn, Estonia (photo) / Bridgeman Images

UIG1566296: People in Front of the Viru Gate at Tallinn, Estonia (photo) / Bridgeman Images

UIG1566806: Sculpture on the Facade of St. Vitus Cathedral, Prague, Czech Republic (photo) / Bridgeman Images

UIG1567261: Frauenkirche, Munich, Bavaria, Germany (photo) / Bridgeman Images

UIG1569245: Water Tank in the Great Garden of the Cistercian Abbey of Fontenay, Cote D'or, France (photo) / Bridgeman Images

UIG1569210: Dog Sculptures Atop A Gate in the Garden of the Cistercian Abbey of Fontenay, Cote D'or, France (photo) / Bridgeman Images

UIG1569244: Water Tank in the Great Garden of the Cistercian Abbey of Fontenay, Cote D'or, France (photo) / Bridgeman Images

UIG1569490: Romanesque Abbey Church of Mont-Saint-Michel, France (photo) / Bridgeman Images

HGP407751: Grimsthorpe Castle and Gardens (photo) / Bridgeman Images

TRK558675: Novalesa Abbey. Chapel of Saint Eldrado and Saint Nicholas. Frescoes. Italy. / Bridgeman Images

TRK697273: Spain. Barbera del Valles. Church of Saint Mary. Romanesque. 12th century. Exterior. / Bridgeman Images

TRK697076: Khachkar from St. Sergius Armenian Church, Feodosiya, Autonomous Republic of Crimea, Ukraine (photo) / Bridgeman Images

TRK697096: Dervish Tekke monastery, Yevpatoria, Autonomous Republic of Crimea, Ukraine (photo) / Bridgeman Images

HGP809175: West front of priory church and Prior's Lodgings, Castle Acre Priory, Norfolk (photo) / Bridgeman Images

HGP809176: Detail of Norman Romanesque west front, Castle Acre Priory, Norfolk (photo) / Bridgeman Images

TRK831356: Saint John of Douro. Intertwined arches. Soria. Castile and Leon. Spain. / Bridgeman Images

TRK831900: Finalnd. Turku. Castle. / Bridgeman Images

TRK831901: Finalnd. Turku. Castle. / Bridgeman Images

TRK879557: Italy. Milan. Cathedral. Gothic. 14th century. Statue of the pinnacle. / Bridgeman Images

TRK879570: Italy. Milan. Cathedral. Gothic. 14th century. Exterior. Statue. Facade. / Bridgeman Images

TRK1018114: Italy. Lucca. Cathedral of Saint Martin. Facade. / Bridgeman Images

TRK1018136: Tower of the Cathedral of Saint Martin. 14th century. Utrecht. / Bridgeman Images

POV1202550: Dover Castle on White Chalk Cliffs, Dover, Kent, UK (photo) / Bridgeman Images

UTD2842034: Knight's chapel in the city of Hassfurt / Bridgeman Images

HGP2629391: Choir and south transept of Rievaulx Abbey, Rye Valley, Ryedale, Yorkshire (photo) / Bridgeman Images