DGA1133893: Walls of Bevagna, Umbria, Italy / Bridgeman Images

DGA910226: Church of Saint Peter, interior, Massa d'Albe, Abruzzo, Italy / Bridgeman Images

DGA626344: Figures of prophets, south rose window of Notre-Dame Cathedral, Paris, Ile-de-France, France / Bridgeman Images

DGA626346: Figures of prophets, south rose window of Notre-Dame Cathedral, Paris, Ile-de-France, France / Bridgeman Images

DGA5652684: San Michele in Foro Church, Lucca, Tuscany, Italy, 8th-14th century / Bridgeman Images

DGA5652685: Square and San Michele in Foro Church, Lucca, Tuscany, Italy, 8th-14th century / Bridgeman Images

RTG5942105: Statue of the Madonna della Bruna, on the façade of Matera Cathedral (stone), Italian School, (13th century) / Bridgeman Images

DGA755418: Angel positioned to left of door, above skirting board, work of Mantegazza or their workshop, Facade of Certosa di Pavia, Italy, 14th-16th century / Bridgeman Images

BTN417662: View of the triforium level above the south aisle of the Lady Chapel (photo) / Bridgeman Images

UTD4920258: Germany, Hamburg, an meeting of the lower court of justice in the 15th century, 1866 (engraving) / Bridgeman Images

JFS136009: The Cathedral Portal, Sulmona, Abruzzo, Italy (photo) / Bridgeman Images

JFS138087: Campanile with three clock faces in Tolentino, The Marches, Italy (photo) / Bridgeman Images

LLM2793647: Cowling Castle (engraving), English School, (19th century) / Bridgeman Images

LLM2793653: Haverfordwest Castle (engraving), English School, (19th century) / Bridgeman Images

JFS312902: View of the facade (photo) / Bridgeman Images

UIG536993: Kapelbrucke Bridge, Chapel Bridge, Lucerne, Switzerland. / Bridgeman Images

SZT2636833: The famous medieval Old Town Hall in Wroclaw, 2001 (photo) / Bridgeman Images

HGP362468: Norwich Cathedral spire (photo) / Bridgeman Images

SZT1074448: View of Wartburg Castle, Germany, 2002 (photo) / Bridgeman Images

DGA645005: Armenia, Dilizan region, Khachar or historiated tombstone from Haghartsin (Hagarcin) monastery, 10th-13th century / Bridgeman Images

DGA541790: Spain, Extremadura, Nogales, castle / Bridgeman Images

UDK836041: Estonia, Tallinn, Old Town, tower of medieval city wall and spire of St Olav's Church / Bridgeman Images

UDK836431: France, Aveyron, Conques, medieval buildings built on hillside in village set against clear blue sky / Bridgeman Images

GCL3130395: ITALY: OTRANTO CASTLE The ancient Aragonese Castle (rebuilt in the 15th century) in Otranto, Puglia, Italy. Line engraving, late 18th or early 19th century. / Bridgeman Images

GCL3398937: ATLIT: CITADEL RUINS Ruins fo the medieval citadel at Atlit, near Haifa, Palestine. Photograph, c.1911. / Bridgeman Images

UDK837049: France, Paris, the Square du Jean XXIII behind Notre Dame Cathedral, green square with monument in the middle. / Bridgeman Images

CUB4835711: Medieval suburb, Caserta Vecchia, Campania, Italy / Bridgeman Images

JFS312905: Facade of the Santa Maria di Collemaggio (photo) / Bridgeman Images

UDK837558: Egypt, Red Sea Mountains, Monastery of St Anthony / Bridgeman Images

EDS346709: Interlaced Motif (photo) / Bridgeman Images

FRM564606: Niedzica village, Dunajec Castle, medieval fortress Southern Poland, Little Poland Province, Pieniny mountains. built early 14th century, at Lake Czorsztyn 2006 / Bridgeman Images

LNO3861683: Meknes, Morocco: Entrance to prison / Bridgeman Images

DMA1067191: Venetian Filigree, 1931 (etching), Arms, John Taylor (1887-1953) / Bridgeman Images

PC991744: Apse detail with Christ (mosaic), Italian School, (9th century) / Bridgeman Images

TRK3598027: Castle and walls of Xativa, Strategically located in Monte Vernisa, Valencia, Spain / Bridgeman Images

KW6267209: Sos del Rey Catolico, Zaragoza Province, Aragon, Spain, 2019 (photo) / Bridgeman Images