OLA5343559: Milan, la Piazza del Duomo, cathédrale de la ville. photo Belluschi / Bridgeman Images

LLM5208361: Construction of Murbach Abbey, near Guebwiller, Alsace (colour litho), Waltz, Jean-Jacques (Hansi) (1873-1951) / Bridgeman Images

BAT5472119: Chapelle des espagnols. Le triomphe de l'Eglise Catholique : La crucifixion. Fresque de Andrea Bonaiuto (ou Bonaiuti) dit Andrea da Firenze (1343-1377), 1365. Eglise Santa Maria Novella, Florence. ©Battaglini/Leemage / Bridgeman Images

CPH231439: Two cocks capture a fox, pavement, 1141 (mosaic), Italian School, (12th century) / Bridgeman Images

ITR7134903: Chapel of Saint Exuperus and Saint Julien, Cathedral of Our Lady of Bayeux / Bridgeman Images

TEC4650517: The Great Mosque of Cordoba was founded by Abd Rahman I in 785 In the Great Mosque of Cordoba, the mihrab d al Hakam II is adorned with a mosaic of gold and azure - / Bridgeman Images

KW141220: Detail from the facade of the church, founded in 1194 and moved to its present site in 1218 (photo), Spanish School, (13th century) / Bridgeman Images

LLJ2776121: Henry VII Chapel, Westminster Abbey, London (b/w photo), English photographer, (20th century) (after) / Bridgeman Images

SCN7177342: Entrance door, Catholic Cathedral (Duomo) of Messina, Messina, Sicily, Italy (photo) / Bridgeman Images

TRK831392: Spain. Castile-Leon. Coca. Coca Castle.15th century. Mudejar style. / Bridgeman Images

IBE5338564: Arches of the inner courtyard of the Abbasid Palace, Baghdad, Iraq, 1179-1225 (photo) / Bridgeman Images

LLM5996459: Diapering from the walls of the Upper Church of St Francis, Assisi, Italy, 14th Century (colour litho), English School, (19th century) / Bridgeman Images

GRL5974072: The octagonal spiral staircase in the summit spire of the tower, Ghirlandina Tower, Modena, Italy (photo) / Bridgeman Images

MEP3705412: Hall of the Map of the World, 14th century (fresco) / Bridgeman Images

TRK831805: Italy. Pavia. The Castle of Visconti. 1360-1366. By Galeazzo II Visconti. / Bridgeman Images

TRK831806: Italy. Pavia. The Castle of Visconti. 1360-1366. By Galeazzo II Visconti. / Bridgeman Images

TRK1109647: Qasr Mshatta. Ruin of an Umayyad winter palace. 8th century AD. Jordan. Facade. / Bridgeman Images

TRK878814: Spain. Castile-Leon. Coca Castle.15th century. Mudejar style. / Bridgeman Images

XCF274300: View of Lincoln Castle (photo) / Bridgeman Images

GRL5974073: The octagonal spiral staircase in the summit spire of the tower, Ghirlandina Tower, Modena, Italy (photo) / Bridgeman Images

GRL5974074: The octagonal spiral staircase in the summit spire of the tower, Ghirlandina Tower, Modena, Italy (photo) / Bridgeman Images

AIS291801: The Monastery of Sant Miquel de Fluvia, c.1066 (photo) / Bridgeman Images

JCH312307: The enclosure wall of the Crusader castle of Qalaat Marqab (photo) / Bridgeman Images

USB180791: An exterior view of a window, Clevedon Court, North Somerset (photo) / Bridgeman Images

JFS134879: View of the Abbey of Sant'Antimo, Montalcino, Tuscany, Italy (photo) / Bridgeman Images

JFS138085: Detail from the exterior of Palazzo del Podesta, Fabriano, The Marches, Italy (photo) / Bridgeman Images

XIR407833: Burgos Cathedral (photo) / Bridgeman Images

USB393115: The Tower (w/c on paper), Brangwyn, Frank (1867-1956) / Bridgeman Images

XIR360284: Capital depicting the souls of the Three Martyrs of Tarragona being raised up to heaven, c.1100 (photo) / Bridgeman Images

TMA396328: Llanhandrock Church, Cornwall (b/w photo) / Bridgeman Images

SAP492256: Sculpture with canopy, Portal of Gereon, Southern Facade, Cologne Cathedral, Germany, 2010 (photo) / Bridgeman Images

SAP492257: Tympanum relief, Portal of Ursula, Southern Facade, Cologne Cathedral, Germany, 2010 (photo) / Bridgeman Images

HGP1073014: Castle Acre Castle, Norfolk, UK (photo) / Bridgeman Images

VLS937997: Ferrara Cathedral (photo) / Bridgeman Images

HGP1547466: Red Mount Chapel, The Walks, King's Lynn, Norfolk (photo) / Bridgeman Images

POV1202545: Old Timber-Framed Houses in Medieval Town, Wernigerode, Harz District, Saxony-Anhalt, Germany (photo) / Bridgeman Images