Do you have 3D glasses?
This anaglyph was created with two images combining the perspective from the left and right eyes. The two images are combined with the very simple program 3DJournal and exported as JPEG. With an inexpensive upgrade, the small dots covering images created with the free version will disappear.
This is a fun exercise, but used sparingly may have certain practical applications.
You can check out this very easy and free software and tutorial on 3D photography from 3DJournal.com.