GreatBuildings.com, the premiere online architecture collection, documenting great buildings and designers from around the world and across history, with images, commentary, and hundreds of free 3D walkthrough models.
The world's largest library catalog is maintained by R.I.B.A., accurately indexing most of the world's leading print periodicals on architecture. It's an amazing resource, fully searchable online, both directly, and through GreatBuildings.com.
