By Rough Guides
By No author listed
By Noonan, Damien
By Ochota, Mary-Ann
By National Trust
By Germano Celant, Mark Rosenthal, Diane Waldman, Nancy Spector
By Bryant, Julius
By Page, Stephen J.
By Baldacchino, Godfrey
By Ashworth, G.J., Tunbridge, J.E.
By Anderson, David, etc.
By Hughes, Claire
By Tarrant, Naomi
By DK Eyewitness
By Landi, Sheila
By Sugden, Keith
By DK
By Darius, Jon, Griffiths, John, Turvey, Peter
By Taylor, Arnold J., Avent, Richard, Cadw: Welsh Historic Monuments
By Adkin, Mark
By Andrew Duncan
By Lonely Planet, Averbuck, Alexis, Baker, Mark, Christiani, Kerry, Filou, Emilie, Garwood, Duncan, Ham, Anthony, Richmond, Simon, Schulte-Peevers, Andrea, Wilson, Neil
By Schultz, Patricia
By Carlo Montresor
By Bard Loken
By Wood, Lucy
By Calder, Jenni
By Williams, Matthew