I've always liked this site, and come back to it very often. The close 2nd, geared toward real-world buildings (but some imaginary ones) is SkyscraperPage [0] (

I've always liked this site, and come back to it very often. The close 2nd, geared toward real-world buildings (but some imaginary ones) is SkyscraperPage [0] (link goes to their diagram of the current world's tallest buildings ... but you can see the buildings in a given city, or state, country, etc ... as well as details of a specific building) ----- http://skyscraperpage.com/diagrams/?searchID=200 http://skyscraperpage.com/diagrams/?searchID=200