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

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

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

UTD2842413: Old guild halls in the Brussels city centre / Bridgeman Images

BAT5471271: Cathedrale Santo Stefano (Saint Stephane) de Prato. Architecture et facade commencees au 13eme siecle et achevees au 15eme siecle Architecture et decors : Guido da Como, Donatello et Michelozzo. Prato, Toscane, Italie ©Battaglini/Leemage / Bridgeman Images

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

TRK697018: Tower of the Church of Saint Peter, Zumaia, Spain, 14th century (photo) / 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

LLM5999054: High Altar, Westminster Abbey, London (photo), English Photographer, (20th century) / Bridgeman Images

IMB4955244: Fortress above the historic town centre of Mithymna; Molyvos; Molivos; Lesbos; Aegean Sea; Greece; Europe / Bridgeman Images

CLF426084: Looking south from the battlements of Castle Drogo, from 'Edwin Lutyens: Country Houses' (b/w photo), English Photographer, (20th century) / Bridgeman Images

XLF3784517: Jew 's House at Lincoln / Bridgeman Images

ARD2524544: Palazzo Abatellis, Regional Gallery of Sicily, Palermo, Sicily (photo) / Bridgeman Images

FAF3566802: Military parade for the ceremony of Selamlik, in Constantinople, at the time of Sultan Abdul Hamid, 1880 (print on double-weight paper) / Bridgeman Images

TEC4622632: The gargoyles of the Hotel de Cluny in Paris. One of the most beautiful monuments of medieval civil architecture in Paris elevated to the iniative of the Abbes of Cluny by Jacques d'Amboise (around 1440 or 1450-1516), brother of the cardinal minister. Restores after the ransacks of the Revolution, it now houses collections of sculptures and art objects from the Middle Ages. Renovated since 1991, the National Museum of the Middle Ages Thermes de Cluny. / Bridgeman Images

SAO3890579: Notre Dame - close / Bridgeman Images

SZT1076325: The Bratwurstglöcklein restaurant at the Moritz chapel opposite the Church of St. Sebald, Nuremberg, 1918 (b/w photo) / Bridgeman Images

JCH316147: The Crusader Castle of Krak des Chevaliers (photo) / Bridgeman Images

JCH316151: Detail of one of the bastions of the Crusader Castle of Krak des Chevaliers (photo) / Bridgeman Images

JCH316152: The Tower of the King's Daughter at the Crusader Castle of Krak des Chevaliers (photo) / Bridgeman Images

HGP374052: Stone carving of a musician, Beverley Minster, East Riding, Yorkshire (photo) / Bridgeman Images

SRB3036780: Barcelona, Spain (photo) / Bridgeman Images

SRB3036781: Barcelona, Spain (photo) / Bridgeman Images

SRB3036783: Barcelona, Spain (photo) / Bridgeman Images

DSP3249481: Abbey, Co Westmeath, Ireland (photo) / Bridgeman Images

DSP3249901: Kilmacduagh Monastery, Gort, Co Clare, Ireland; Ruined Monastic Settlement (photo) / Bridgeman Images

DSP3250405: Delvin, Co Westmeath, Ireland, Delvin Castle (photo) / Bridgeman Images

DSP3250407: Fore Village, Co Westmeath, Ireland, Fore Abbey Ruin (photo) / Bridgeman Images

DSP3254423: Dublin,Co Dublin,Ireland;Shop Fronts In Temple Bar (photo) / Bridgeman Images

GRL6166263: The Cloister of the Benedectine monastery (XII century): the Eastern side of the capital E20 (Cain and Abel making offers to God) (photo) / Bridgeman Images

PRZ702436: The Triumph of Charlemagne and the Christian Army (fresco), Schnorr von Carolsfeld, Julius (1794-1872) / Bridgeman Images

CLF294250: Brinsop Court (b/w photo), Evans, Frederick Henry (1853-1943) / Bridgeman Images

TRK3737371: Venice, Italy, Square and Basilica of St. Mark (engraving) / Bridgeman Images

TRK3708210: Spain, Umayyad period, Medina Azahara (936-960) Capital in the Salon Rico (953-957) Andalusia. / Bridgeman Images

MAE3469365: Detail of a cloister relief (stone), French School / Bridgeman Images