When I posted in early April about Google's aerial maps, I did not know about Google Sightseeing (or it didn't as yet exist, I'm not sure). That fun site has some interesting architectural sightings that have prompted me to search out some equally interesting aerials.
A couple of their's:
Smith-Miller Hawkinson and Barbara Kruger's Picture This at the North Carolina Museum of Art (as linked previously).
The WTC site in Lower Manhattan, much in the news these days.
A handful of mine:
Kimbell Art Museum (weekly dose).
Clinton Library (under construction; weekly dose).
Getty Center (weekly dose).
Dominus Winery (floor nature).
Neurosciences Institute (Galinsky), just down the street from the Salk Institute (Galinsky).