Websites feature pictures or tales of their ghost-towning experiences.
http://j.webring.com/hub?ring=ghosttownsusa
The practice and theory of urban exploration in areas not designed for public usage. This site is the online companion of the paper zine about going places you're not supposed to go.
http://www.infiltration.org/
Photographic essays include explorations of a girls orphanage, insane asylum, hospital, crypt, and steel plant.
http://www.oboylephoto.com/ruins/index.htm
A cultural project inviting contributions from anyone interested in derelict buildings or abandoned spaces. Interviews, research and photographic galleries.
http://www.thederelictsensation.com/index.htm
Exploration in Illinois.
http://www.angelfire.com/ut2/illinois-exploration/
Sites focussing on the art of urban exploration: touring storm drains, abandoned buildings, rooftops, transit tunnels, college steam tunnels and other off-limits locations. Ring created in 1998.
http://e.webring.com/hub?ring=draining
A place for fellow explorers to find and share information about the built landscapes around us. This site features an index of information in various media - trip logs, photos, maps.
http://www.urbanexplorers.net/
Adventures underground and topside, around Australia and beyond, news and pictures.
http://www.urbex.org/
Urban adventuring in Vancouver, Canada.
http://www.wraiths.org/
Database of urban exploration. Resources, pictures and articles.
http://www.zone-tour.com/