These images are in anaglyph format, which means you must use 3D glasses to view them in 3D. Several types of glasses exist, but the best ones to view these images are Red/Cyan glasses. The old Red/Green or Red/Blue, while not optimum, will work fairly well. The Red lens should be over your Left eye. Click images to enlarge.

GlassesTiny-1in
Red/Cyan 3D Glasses

Change to:  Parallel View  |  Cross-View