Archinform, Germany
A resource of over 800 projects both finished and unfinished from architectural students all around the world. The web site is based in Germany

Cities and Buildings Database
The Cities/Buildings Database is a collection of digitized images of buildings and cities drawn from across time and throughout the world, available to students, researchers and educators on the web.

The Carnegie Library of Pittsburgh
Online hypertext exhibit of some 600 historical photographs and images, accompanied by text, of Pittsburgh, its bridges and its neighborhoods.

The Great Buildings Collection
Hyperlinked with the Royal Academy of British Architects, this site holds an enormous catalogue of photographs and 3D models, with search capabilities, by architect, and location of building. This gateway to architecture around the world and across history documents a thousand buildings and hundreds of leading architects, with 3D models, photographic images and architectural drawings, with commentaries, bibliographies, web links and more for famous designers and structures of all kinds.