Lost America: Night Photography of the Abandoned West. Via MeFi, which has many more necro-aesthetic delights.

Remoting Future counts down to (and up from) major events from science fiction. Via Gravity Lens, which also links to an argument that any alien civilizations we encounter are likely to be artificial and to Forbes's Ghost Cities of the Year 2100.

Maryland's Digital Cultural Heritage Web site has a great online exhibit all about the Great Baltimore Fire of 1904. Via Cynical-C.