Flickr: France Exploration
- Group sharing photos from urban exploring in France.
- http://www.flickr.com/groups/francexploration/

Underground Passages
- Studying the artificial underground cavities, mainly the refuges and the religious underground passages. Also the underground quarries, cave dwellings and troglodytic sanctuaries. Mainly France, but also Turkey, Spain, Bulgaria.
- http://prilep.club.fr/indexa.htm

Urban-exploration.com
- Photo galleries related to underground and topside sites in France.
- http://www.urban-exploration.com/

Closed Stations in Paris' Subway
- Andre Quintanar's site on closed subway stations in Paris, France.
- http://w3.teaser.fr/~aquintanar/ratp-img-en.html

Catacombs and Quarries of Paris
- Yet another urban exploration site. Presents some of our explorations in Belgium and France: abandonned factories, castles, coal mines, catacombs and quarries. You'll find also some info about the explored places.
- http://home.versateladsl.be/s.margaine/english/index.html

Cataphiles.org
- A female perspective on all things related to the Parisian catacombs.
- http://morthicia.cyberkata.org/indexktanewgb.htm

André Quintanar
- Closed subway stations and the Small Belt tracks around Paris.
- http://w3.teaser.fr/~aquintanar/index.html

Friched.net
- Features urban and industrial photography around Paris.
- http://striped.online.fr/friched/