Images of Malawi and Zambia
An example of some 3D images for free-viewing; look at one pair of images and defocus your eyes so that their axes are parallel, as if looking at Magie Eye images. If you see 3 images, concentrate on the middle image and it will jump out into 3D, but it may take a little practice. Having seen one image in 3D move up or down to see the others.
Nature and Travel Photography in 3D 