Martin Schall's Los Angeles Architectural Photo Gallery at you-are-here.com has up 800 images of buildings, panorama views and scenes of local communities. He's got more than 200 of downtown alone. He indexes some of the photos by architect and also has pages about L.A.-centric books, films, history and the weather.
Why? All he explains on the site is that "you-are-here.com is a non-profit internet experience." Whatever, we like it.