Basilica of St. John the Baptist, St. John's, Newfoundland - http://www.stjohnsarchdiocese.nf.ca/basilica_history.asp Illustrated history and description from the official site of the Roman Catholic cathedral of Newfoundland, built 1846-55 to the design of John Philpot Jones.
Great Buildings Online: Cathedrals - http://www.greatbuildings.com/types/types/cathedral.html Images and information on some of the best-known European cathedrals.
Acceuil, Rencontre, Communaute - http://www.arcuk.onestop.net The UK branch of ARC provides free guided tours in European cathedals during the summer.
Belgiumview: Belgian Cathedrals - http://www.belgiumview.com/cathedral/ Pictures and background information about the most imporant Belgian cathedrals.
Ouspenie (Dormition) Cathedral, Rostov, Russia - http://zvon.yaroslavl.ru/english.htm The official site provides an outline history and many photographs of this onion-domed church of c.1500, with its ornate interior.
St. James Cathedral, Seattle - http://www.stjames-cathedral.org/ The official site of this Catholic church includes a history of its construction 1905-7 to Renaissance-style designs by Heins and LaFarge, with bibliography.