XIR411503: The Chateau d'Angers, completed 1238 (photo), French School, (13th century) / Bridgeman Images

JFS136513: Oblique view of the Torre dei Lamberti, Verona, Veneto, Italy (photo) / Bridgeman Images

JFS135113: View of the town of San Gimignano with its towers, Tuscany, Italy (photo) / Bridgeman Images

DGA645003: Armenia, Dilizan region, Khachar or historiated tombstone from Haghartsin (Hagarcin) monastery,10th-13th century / Bridgeman Images

PC991672: Font, originally from the church of St Agatha in Quirinale (stone), Italian School, (9th century) / Bridgeman Images

DGA645009: Armenia,Talich, ruins of 7th century church / Bridgeman Images

DGA1133528: Battlements of Chateau d'Arlempdes, founded in 12th century, Auvergne, France / Bridgeman Images

AAV1002528: Almudaina Royal Palace. Palma de Mallorca, Spain, Aznar Cenamor, Fernando / Bridgeman Images

TRK831808: Slovenia. Ljubljana. Castle. Built in the 12th century. The castle's Tower dates to 1848. / Bridgeman Images

TRK831810: Slovenia. Ljubljana. Castle. Built in the 12th century. The castle's Tower dates to 1848. / Bridgeman Images

TRK831809: Slovenia. Ljubljana. Castle. Built in the 12th century. The castle's Tower dates to 1848. / Bridgeman Images

JB24197: The Prior's Door, Ely Cathedral, Cambridgeshire, c.1150 (photo) (see also 24194) / Bridgeman Images

JFS134009: View of the Town (photo) / Bridgeman Images

JFS134014: Columns from the Nave Arcade (photo) / Bridgeman Images

KWE188584: Windsor Castle, from 'The Gallery of Geography' by Rev. Thomas Milner, published c.1880 (engraving), English School, (19th century) / Bridgeman Images

XPC341156: Facade with rose window, late 12th century (photo), French School, (12th century) / Bridgeman Images

UIG1571314: Island Castle, Trakai, Lithuania (photo) / Bridgeman Images

UIG1571321: Island Castle, Trakai, Lithuania (photo) / Bridgeman Images

UIG1571323: Island Castle, Trakai, Lithuania (photo) / Bridgeman Images

HGP362465: Norwich Castle (photo) / Bridgeman Images

HGP355159: Flint Castle (photo) / Bridgeman Images

GDG473671: Fort Qaitbay, Alexandria (photo) / Bridgeman Images

TRK2597928: France, Aude, Puivert castle, The music room, Vault / Bridgeman Images

MAE3469393: View of the Church of Saint-Pierre-es-Liens, Blérancourt, Nord-Pas-de-Calais-Picardie, Aisne, France (photo) / Bridgeman Images

DGA541793: Spain, Extremadura, Nogales, castle, detail of tower / Bridgeman Images

DGA541796: Spain, Extremadura, Nogales, castle, detail of tower / Bridgeman Images

DGA541799: Spain, Extremadura, Nogales, castle / Bridgeman Images

SZT2636834: The Old Town Hall of Wroclaw, 2001 (photo) / Bridgeman Images

DGA1130369: Medieval fortified gate, Cape Kaliakra (Nos Kaliakra), Black Sea, Bulgaria / Bridgeman Images

MEP3064742: Raf Vallone and Marlene Dietrich, Italy, 1960 (b/w photo) / Bridgeman Images

MEP3064743: Raf Vallone and Marlene Dietrich, Italy, 1960 (b/w photo) / Bridgeman Images

UDK837759: France, Paris, St. Severin cathedral, carved stone gargoyles jut out from the facade, spires rise above the massive structure. / Bridgeman Images

SZT5179399: Castle Lauenstein in Oberfranken, 1935 / Bridgeman Images

NCO833741: Ms. New Coll 380, f32r. The antiquities of the Cathedral Church of Saint Mary, Carlisle, drawn by Robert Carlile, 1795 (pen & ink and w/c on paper), Carlile, Robert (fl.1795) / Bridgeman Images

DGA1080345: Interiors of a crypt in a cathedral, Andria, Apulia, Italy / Bridgeman Images

DGA649835: View of Chateau de Aulan, Rhone-Alpes, France, 12th century / Bridgeman Images