Some of the photos herein are stereoscopic 3D. If you already are able to view crossed 3D photos, you need not read the rest:

Are you able to see the fun and striking 3D in the old Viewmaster viewers? Or in the more modern 3D theaters or virtual reality viewers? If so, and if you can see double when you willfully cross your eyes, then you have a built in, free of charge, virtual reality viewing capability!

The photos are crossed (meaning that the photo for your right eye is on the left, and for your left eye is on your right) free-fusion stereoscopic 3D. Scroll down to look at one of the photos and cross your eyes. You will see 3 photos: the one on your left will be seen by your left eye only, the one on your right by your right eye only, and the one in the middle by both eyes. Concentrate on the middle photo and allow your eyes to relax focus while continuing to keep that middle photo "together." It may take a little practice, but you will eventually notice the same striking 3D appearance that you get with some of the expensive virtual reality goggles!

You may find it tiring at first, but it will become easier and more relaxing the more you practice it. This technique, when practiced regularly, can also be used to make the visual system more efficient, and may lead greater comfort during intense visual work tasks.

SCROLL DOWN for more photos, or click on the little triangle to your right for a slide show.