UIG1569237: Tombs and Medieval Altarpiece With Scenes Form of the Life of Christ in the Apse of the Abbey Church of the Cistercian Abbey of Fontenay, Cote D'or, France (photo) / Bridgeman Images

BBG11687946: Saint Paul, 12th-15th century (relief), Bonnefon, Bernard / Bridgeman Images

GEG1783501: The square house / Bridgeman Images

DPS3256139: Dublin, Co Dublin, Ireland; Street Scenes With Christ Church Cathedral In The Background (photo) / Bridgeman Images

DPS3255039: Blarney castle; County Cork, Ireland (photo) / Bridgeman Images

TW1213608: The Black Gate, Newcastle (w/c (wash) on paper), Ridley, John (19th century) / Bridgeman Images

UIG1565023: Church of St. Nedelya, Sofia, Bulgaria (photo) / Bridgeman Images

UIG1566149: St. Theodor (Iron Gate), Split, Split-Dalmatia, Croatia (photo) / Bridgeman Images

UIG2918758: Mont-Saint-Michel And Mudflats In The Bay At Dusk (photo) / Bridgeman Images

MFI314702: Peterborough Cathedral from the south west (photo) / Bridgeman Images

UIG1566695: Astronomical Clock and Calendar of the Old Town Hall, Prague, Czech Republic (photo) / Bridgeman Images

HGP809202: West Front and Spire, Norwich Cathedral, Norfolk (photo) / Bridgeman Images

LLW993423: 14th century Tithe Barn, Harmondsworth, England (photo) / Bridgeman Images

HGP2629361: The Norman Keep through an arch, Rising Castle, Norfolk (photo) / Bridgeman Images

HGP2629373: Residential buildings and ditches at Helmsley Castle, Yorkshire (photo) / Bridgeman Images

TRK2922112: Capital depicting a siren-fish with double tail, West gallery, 12th century, Cloister of Sant Pere de Galligants Abbey, Girona, Spain (photo) / Bridgeman Images

GRL6166262: The Cloister of the Benedectine monastery (XII century): a series of capitales on the Eastern side of the cloister (photo) / Bridgeman Images

XIR1631464: Chateau de Montaigne, Dordogne (engraving), French School, (19th century) / Bridgeman Images

NCO833749: Ms. New Coll 380, f40r. 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

DGA2573107: Jaunpils castle, founded in 1301 by Livonian Order, Jaunpils, Latvia / Bridgeman Images

DGA2573119: Turaida castle (1214), near Sigulda, Latvia / Bridgeman Images

DGA910843: Sacred figure, fresco detail (12th century) from apse, Abbey of St Peter ad Oratorium, Capestrano, Abruzzo, Italy / Bridgeman Images

DGA1132479: Fraterna fountain in Celestine V square, 19th century, Isernia, Molise, Italy / Bridgeman Images

SAP492262: Portal of Mary, West Facade, Cologne Cathedral, Germany, 2010 (photo) / Bridgeman Images

SAP478970: Facade of the Convent of the Knights of Christ, Tomar, Portugal, 2009 (photo) / Bridgeman Images

HGP362651: Chichester Cathedral and Bishop's Palace Gardens, West Sussex (photo) / Bridgeman Images

EHT369389: Aerial view of Belsay Castle and Gardens (w/c on paper), Ball, Terry (20th Century) / Bridgeman Images

DGA539293: Italy, Molise region, Termoli, Castle of Termoli / Bridgeman Images

DGA542285: Portugal, Leiria, Leiria castle, (14th century) / Bridgeman Images

DGA542831: Portugal, Beja castle, (13th century) / Bridgeman Images

HGP424900: Aberdour Castle (photo) / Bridgeman Images

TRK1018025: Spain. Fuensaldana Castle. / Bridgeman Images

TRK1018112: Italy. Lucca. Cathedral of Saint Martin. Facade. / Bridgeman Images

TRK832920: Spain. Barcelona. The Chapel of Santa Agata. Gothic building. Year 1302. / Bridgeman Images

DGA1132955: Graines castle, 11th century, Val d'Ayas, Aosta Valley, Italy / Bridgeman Images

DGA5651847: Walls of Radicofani Fortress, Val d'Orcia Park of Art, Nature and Culture (UNESCO World Heritage List, 2004), Tuscany, Italy, 10th-13th century / Bridgeman Images