Still the gold standard for rigorous photodocumentation of the urban landscape.

Camilo José Vergara's astonishing series of photographs on post-industrial cities. Awful interaction design, but worth it for things like, particularly, this image of trees growing inside Camden's dilapidated Carnegie Library: http://viennasecession.typepad.com/photos/uncategorized/6_warrencentertreevergara.jpg

Lovely.

Pete's revived site. Hooah.