Spaghetti Junctions: Extensive Highway Interchanges
I am surprised there is no forum yet on this topic (I couldn't find one).
Here is one that I recently visited in Shanghai, Puxi side (not my photos):
wikimedia commons; inautonews.com
This scary bastard (Tom Moreland Interchange) in Atlanta:
roclar.net
On google maps:
http://maps.google.com/maps?ie=UTF8&...,0.009978&z=17
The High-Five of Dallas:
wikimedia commons
The Judge Harry Pregerson Monster of Los Angeles:
desktopwallpapers.ru
The Basketweave, on the 401, Toronto:
wikimedia commons