HGP2629362: Fountains Abbey viewed from the West, near Ripon, Yorkshire (photo) / Bridgeman Images

HGP2629389: Choir and south transept of Rievaulx Abbey, Rye Valley, Ryedale, Yorkshire (photo) / Bridgeman Images

HGP2629396: Rievaulx Abbey, Rye Valley, Ryedale, Yorkshire (photo) / Bridgeman Images

LLM3094951: Oldest House, Winchester (b/w photo), English Photographer, (20th century) / Bridgeman Images

DSP3503832: Saint Audeon's Church, Co Dublin, Ireland; 12Th Century Church Of Ireland (photo) / Bridgeman Images

XLF3782949: Circus and Hippodrome of Christian Constantinople, illustration of the 'Imperium Orientale', for 'Cassell's History of England, Vol. I', 1898 (engraving), English School, (19th century) / Bridgeman Images

SZT3013311: Castle in Burghausen an der Salzach, 1933 (b/w photo) / Bridgeman Images

SKD405728: Doorway in Meissen, 1827 (oil on canvas), Friedrich, Caspar David (1774-1840) / Bridgeman Images

GRL5974212: View of the internal stairway, Ghirlandina Tower, Modena, Italy (photo) / Bridgeman Images

LLM6001534: Interior of Monreale Cathedral, Palermo, Sicily, Italy (colour litho), German School, (19th century) / Bridgeman Images

ELC3599760: Camerino Cathedral, by Andrea Vici e Clemente Folchi, 19th century, 1802-1832, Vici, Andrea (1744-1817) & Fochi, Clementi (Clemente Folchi (1780-1868) / Bridgeman Images

TRK831467: Syria. Krak des Chevaliers. / Bridgeman Images

GRL5974205: View of the internal stairway, Ghirlandina Tower, Modena, Italy (photo) / Bridgeman Images

FBU4249510: San Giminiano. Medieval village. Tuscany, Italy - Medieval Village of San Giminiano. Tuscany Italy / Bridgeman Images

DSP3249190: Silhouette Of St. Patrick's Church And A Franciscan Monastery On The Hill Of Slane, County Meath, Republic Of Ireland (photo) / Bridgeman Images

DSP3249960: Ballindoon Abbey, Lough Arrow, County Sligo, Ireland; Lakefront Historic Abbey (photo) / Bridgeman Images

DSP3250214: The Brazen Head, Dublin, Co Dublin, Ireland, Ireland's Oldest Pub Established In 1198 (photo) / Bridgeman Images

DSP3250221: Kilkenny Castle, Kilkenny, Co Kilkenny, Ireland (photo) / Bridgeman Images

DSP3255884: Co Leitrim, Ireland, Dromahair, Creevelea Friary, Franciscan Friary (photo) / Bridgeman Images

TRK2922537: Aachen Cathedral, Pala d'Oro, Carlolingian art, Germany (photo) / Bridgeman Images

DSP3503233: Dunluce Castle, Near Bushmills, Co Antrim, Ireland (photo) / Bridgeman Images

DSP3503765: Moyne Abbey, Co Mayo, Ireland; 15Th Century Franciscan Abbey (photo) / Bridgeman Images

SAO3890579: Notre Dame - close / Bridgeman Images

FBU4249490: San Giminiano. Medieval village. Tuscany, Italy - Medieval Village of San Giminiano. Tuscany Italy / Bridgeman Images

FBU4249495: San Giminiano. Medieval village. Tuscany, Italy - Medieval Village of San Giminiano. Tuscany Italy / Bridgeman Images

JB24676: Interior detail, Cardiff Castle, South Wales (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

KWE478248: Saint Gaugericus, Bishop of Cambrai, arriving at the city for his appointment, from 'Military and Religious Life in the Middle Ages' by Paul Lacroix, published London c.1880 (litho), French School, (19th century) / Bridgeman Images

TRK879558: Italy. Milan. Cathedral. Gothic. 14th century. Exterior. Detail. Facade. / Bridgeman Images

TRK879566: Italy. Milan. Cathedral. Gothic. 14th century. Exterior. Detail. Facade. Angel. / Bridgeman Images

TRK831887: Finalnd. Turku. Castle. / Bridgeman Images

TRK831889: Finalnd. Turku. Castle. / Bridgeman Images

TRK831899: Finalnd. Turku. Castle. / Bridgeman Images