Urban Exploring. Recently: Sanatorio Popolare Cantonale di Piotta. Sinteranlage, Duisburg. Atomschutz Kurfürstendamm, Berlin (flash). (Previously.)
Abandoned places: A satellite facility. A drag strip. A sports arena. A factory. A highway. A school. Another factory. An industrial park. A missile site. A church. A brewery. And much more at Abandoned But Not Forgotten. (Warning: Web 0.2 site with very large photos of variable quality...)
The extraordinary Center For Land Use Interpretation is a tertiary reference for one of today's posts, and it's been mentioned in comments before. Don't miss the Land Use Database or the Newsletter.
Abandoned Memories is short on text but thick with photos. Even without captions for every picture, contextual clues can give us a disturbing idea of what life might have been like in the Wayne County Child Development Center (before it was abandoned, razed, and turned into a golf course). The rather-less-easy-to-navigate Northville-Tunnels.com also has photos and information.
Frightening Archaeology: Dark Passage is scarier than Infiltration; less cosy than Lost America; and more disturbing than Ruins of Detroit or any other ruination already investigated on Metafilter. In fact, it's probably the extreme incarnation of the thriving world of websites about abandoned buildings, full of spooky mental asylums, echoes of depravity and twisted archaeology - like a spaced-out online version of Brad Anderson's Session 9. Or the real thing. To make matters worse, it also falls disconcertingly into the "What's this all about?" category. Brrrrr.... [QT/WM required for the last link only - please disregard "Purchase" title and enjoy Nine Inch Nails soundtrack. Via Linkfilter.]