MindWarp
The MindWarp is a site dedicated to research on noetics (the study of consciousness and its alteration).
Images: on the left, 3D stereogram (like "Magic Eye" - try defocussing your eyes and watching it); on the right, Fractal Animation
Select where you want to go from this popup menu:
If you have a sound card, and a MIDI plug-in, the music you are hearing is Trance MIDI 3
CAVEATS: This area exists for informational purposes only. Discussion of a substance here does not necessarily indicate one should use it. Users of any of these substances face obvious legal risks, as well as potential health risks. It is my own belief that the two categories of substances presented here have low risks of addiction and toxicity, but anything can be dangerous if not used carefully. Don't use anything you don't understand.
I believe it is nonsensical to criminalize entheogenic plants and animals because of the compounds they contain, but this is our current policy. As for the nootropics, in most cases the FDA does not prevent their usage, but does force manufacturers not to make 'medical' claims that they enhance vitality, intelligence, or concentration, or fight the effects of aging.
Places for consciousness research