UIG1570967: Hanseatic House, Riga, Latvia (photo) / Bridgeman Images

JFS249932: View of the castle from the Duero river valley (photo), Spanish School / Bridgeman Images

UIG2915795: Stained Glass Windows (photo) / Bridgeman Images

TRK1109759: Portugal. Estremoz. Gothic porch in Estremoz Castle (King John). Capitals. / Bridgeman Images

CH433414: Townspeople near the Nicolaikerk, Utrecht (oil on panel), Verheyen, Jan Hendrik (1778-1846) / Bridgeman Images

GDG279805: Crusaders church of St. John the Baptist, view of the chevet (photo) / Bridgeman Images

GDG279808: Crusader castle, entrance of the tower (photo) / Bridgeman Images

LFG3898641: Karim Khan Fort Bath, Fars Province, Shiraz, Iran, 2015 (photo) / Bridgeman Images

LLM5226167: Carcassonne, France (chromolitho), European School, (20th century) / Bridgeman Images

DGA1133919: Tower of Town hall, Fossato di Vico, Umbria, Italy / Bridgeman Images

JFS135112: Romanesque Door Pediment, Lucca, Tuscany, Italy (photo) / Bridgeman Images

JFS135802: View of the Town, with Camerata in the background, Izzalini, Umbria, Italy (photo) / Bridgeman Images

BAL6012: View of the west front of Rochester Cathedral, built c.1150 (photo) / Bridgeman Images

MUC176348: Aerial view Monteriggioni, Tuscany, Italy (photo) / Bridgeman Images

XPH311123: Burg Stolpen, built c.1100 (photo) / Bridgeman Images

MAE340732: Colegiata de Santa Maria Maggiore (photo) / Bridgeman Images

MAE340733: Colegiata de Santa Maria Maggiore (photo) / Bridgeman Images

XBP235536: View of the castle (photo) / Bridgeman Images

UIG1570957: House of the Blackheads at Night, Riga, Latvia (photo) / Bridgeman Images

UIG1570965: Buildings on Dome Square, Riga, Latvia (photo) / Bridgeman Images

UIG1570977: Street Scene in the Old Town, Riga, Latvia (photo) / Bridgeman Images

HGP362472: Norman Tower, Norwich Cathedral (photo) / Bridgeman Images

HGP407758: TIC timbered house (photo) / Bridgeman Images

HGP405315: Fiddleford Manor (photo) / Bridgeman Images

TRK2597941: Gothic cathedral, 13th-14th centuries, Facade, Leon, Spain / Bridgeman Images

TRK2637105: Sart Rib vault, New Cathedral, Salamanca, Castile and Leon, Spain (photo) / Bridgeman Images

KW6267042: Bridge at Cangas de Onis, Asturias, Spain, 2016 (photo) / Bridgeman Images

LLM2793598: Ravenscraig Castle (engraving), English School, (19th century) / Bridgeman Images

TMA396209: Interior view of Lanercost Priory, Cumbria (b/w photo) / Bridgeman Images

EHT369385: Aerial view of Middleham Castle in c.1300 (w/c on paper), Ball, Terry (20th Century) / Bridgeman Images

DGA755895: Encounter between Three Living and Three Dead, 14th century fresco by Master Trecentesco of Sacro Specol, Upper Church of Sacro Speco Monastery, Subiaco, Italy, 14th century / Bridgeman Images

DGA758902: Mosaic detail from the octagonally-segmented central dome, 1270-1300, Baptistery of San Giovanni Battista, Florence. Italy, 13th-14th century. / Bridgeman Images

UIG543286: Spain, Aragon. Albarracin, A Medieval Village Which Is A National Monument. / Bridgeman Images

LLM5227269: Castle architecture, as influenced by the Crusades and exemplified by Caernarvon Castle (litho), English School, (20th century) / Bridgeman Images

TRK1031074: Spain. Avila. Section of the medieval walls, 12th century. / Bridgeman Images

DGA646776: Medieval tower (Torre de Menagem) of the castle in Beja. Portugal, 13th century. / Bridgeman Images