Artists
Arcadio Esquivel (LinkedIn)
A collection of works by Rene Magritte (Internet Archive)
Oscar Reutersvärd - Impossible World. A much bigger collection of his work than I have.
Audio
Exhibits
Puzzling Place - Keswick, UK
Faces
Anomalous Images of Mars (Internet Archive)
Astronomy Picture of the Day - 6th April 1998 - The face on Mars
Connection - The face on Mars (Internet Archive)
Detroit News report - Angel Or Devil? Viewers See Images In Smoke - WTC (Internet Archive)
Eyewitness Report - Virgin Mary, Clearwater, Florida (Internet Archive)
Eagle Nebula - NASA's Hubble site (Internet Archive)
Eagle Nebula - Chris Mastrangelo's Home Page (Internet Archive)
Eagle Nebula - Bad Astronomy
Face on Mars
Face on Mars and other Familiar Features
Faces at Alum Cove
Faces in WTC images (Internet Archive)
Girl in the Mountain - Cerros de Escaz? San Jos? Costa Rica (Internet Archive)
Happy Face Crater on the Moon
Hooded Man - Don Baccus Photography (Internet Archive)
Indian Heads and other Humanoid Rocks
Man in the Moon and other Weird Things
Mars Face Breaks Under Questioning (Internet Archive)
Moon Hoax by Sir John Herschel
Moon Illusions (Internet Archive)
Mysteries - Faces & Crosses - WTC (Internet Archive)
Old Man - GORP (Internet Archive)
Photo Gallery - Virgin Mary, Clearwater, Florida (Internet Archive)
Pointed Nose -
Joe Hoover Photography (Internet Archive)
Skeptics Dictionary - Our Lady of Watsonville
Stonehenge designer? - BBC article
Stonehenge designer? - Crystalinks
Stonehenge designer? - Jedi Girl (Internet Archive)
Tampa Bay Skeptics - Virgin Mary, Clearwater, Florida (Internet Archive)
Universe in the Classroom - The face on Mars (Internet Archive)
Unmasking the Face on Mars (Internet Archive)
Woman in the Moon (Internet Archive)
World Trade Center Smoke Faces (Internet Archive)
Zeitun - Mary on TV - Virgin Mary, Zeitun, Egypt (Internet Archive)
Optical illusions
Art & Illusions - A nice collection of illusions (Internet Archive)
Checker Shadow Illusion
Der Neandertaler Regiert - A German language site but some very interesting stuff here
Impossible World - A beautifully put together site by Russian Vlad Alexeev
Lecture Notes - Southern Arkansas University - Department of Behavioral and Social Sciences (Internet Archive)
Lightness Illusions
Palmyra (Internet Archive)
Perceptual Science Group - MIT
Planet Perplex (Internet Archive)
Ryanbut - One of the first optical illusion sites I found on the Internet (Internet Archive)
Vision & Art
Psychology
Depth Perception in Vision - Clarkson University (Internet Archive)
Gender Differences in Illusion Response - It seems your sex determines how to relate to some optical illusions (Internet Archive)
Lightness Perception and Lightness Illusions (Internet Archive)
Neuroscientists locate area of brain responsible for 3-D vision - Caltech Press Release (Internet Archive)
Lecture Notes - Southern Arkansas University - Department of Behavioral and Social Sciences (Internet Archive)
Perception - Journal of Perception (Internet Archive)
Perceptual Science Group - MIT
Richard L. Gregory
Vision & Art
Web Vision
SIRDS
3D & SIRDS - includes ASCII Stereograms (Internet Archive)
Hierarchy of Stereograms (Internet Archive)
SIRDS (Internet Archive)
SIRTS (Internet Archive)
Sunny Spot - SIRDS and SIRTS
Surreal Artists
Zdzislaw Beksinski
Dali
Roger Dean
Robert Gonsalves
Erik Johansson
Vladimir Kush
Hans-Werner Sahm
Trompe L'oeil Artists
Most of these are commercial artists, but show examples of their excellent work
Eric Cumini (Internet Archive)
Ron Francis (Internet Archive)
Graphicatta (Internet Archive)
Richard Haas
Paul Montgomery (Internet Archive)
John Pugh
Mary Sue Weeks (Internet Archive)
Paul Wright (Internet Archive)
Vision
Age-Appropriate Vision Milestones - Lucile Packard Children's Hospital, Growth and Development (Internet Archive)
Lecture Notes - Southern Arkansas University - Department of Behavioral and Social Sciences (Internet Archive)
Mapping Vision - On the Brain, the Harvard Mahoney Neuroscience Institute Letter (Internet Archive)
Optometrists Network
Vision - How Stuff Works
Vision Development - Children's Vision Information Network (Internet Archive)
WebVision