Other
Gothic Architecture: The Cathedrals
Students and teachers can find information and links to related resources on Gothic cathedrals, especially English Gothic architecture.
United Nations
Unesco: Cologne Cathedral
Description, illustrations, history and maps of the Cologne Cathedral paired with news and reports of threats to its integrity from pollution, nearby construction, and similar dangers.
United Nations
Unesco: The Historic Fortified City of Carcassonne
This site from the United Nations Educational, Scientific and Cultural Organization contains a brief description of the fortified French city of Carcassonne. Links to other related sites.