 | bregman.gif | Albert Bregman |
 | Uit- en Inzichtraam voor Ars- en Mathesis-vrienden | Jos de Mey |
 | demey_kast.jpg | Jos de Mey |
 | demey_magritte.jpg | Jos de Mey |
 | drowning.jpg | Peter Newell |
 | L Embarras du Bulgaire | W. Düms |
 | face_landscape.jpg | |
 | face_women.gif | |
 | fork.jpg | |
 | fukuda.jpg | Shigeo Fukuda |
 | girl_mirror.gif | |
 | ill_size.jpg | |
 | Les promenades d Euclide | René Magritte |
 | mountain_face.jpg | |
 | mysterious_14.gif | |
 | mysterious_15.gif | |
 | mysterious_16.gif | |
 | mysterious1.gif | |
 | mysterious12.gif | |
 | mysterious13.jpg | |
 | mysterious3.gif | |
 | mysterious5.gif | |
 | mysterious6.gif | |
 | mysterious7.gif | |
 | Formative causation | Rupert Sheldrake |
 | mysterious8.jpg | |
 | orosz_coffin.jpg | István Orosz |
 | orosz_folly.jpg | István Orosz |
 | orosz_painter.jpg | István Orosz |
 | orosz_ruin.jpg | István Orosz |
 | orosz_ship.jpg | István Orosz |
 | orosz_statue.gif | István Orosz |
 | orosz_wall.jpg | István Orosz |
 | playful.gif | Peter Newell |
 | reutersvard_connect.jpg | Oscar Reutersvärd |
 | rust_bears.jpg | Donald Rust |
 | rusty_chapel.jpg | Donald Rust |
 | rusty_eagles.jpg | Donald Rust |
 | rusty_fish.jpg | Donald Rust |
 | rusty_fishing.jpg | Donald Rust |
 | rusty_flowers.jpg | Donald Rust |
 | rusty_horses.jpg | Donald Rust |
 | rusty_music.jpg | Donald Rust |
 | rusty_river.jpg | Donald Rust |
 | rusty_swans.jpg | Donald Rust |
 | rusty_wolf.jpg | Donald Rust |
 | rusty_wolves.jpg | Donald Rust |
 | smilefrown.gif | |
 | 5 Heads, 10 Bodies | |
 | 7 Dolphins | Jim Warren |
 | 7 Horses | Jim Warren |
 | A bird in the bush | |
 | A Fish Story | Gustave Verbeek |
 | A man of many faces | |
 | A map of the world | James Montgomery Flagg |
 | A Meeting between the Stone from the Wise Durer and the Owl van J.d.m | Jos de Mey |
 | A slightly difficult interlocking wood puzzle | Mitsumasa Anno |
 | Afternoon At Sanctuary Falls | John Van Straalen |
 | All is vanity | Charles Allen Gillbert |
 | Alpine Chorus | John Van Straalen |
 | Ambiguous Cube | |
 | Anchor Buggy Co. | |
 | Animated impossible cube | |
 | Apparition | |
 | Apparition of a Face and Fruit Dish on a Beach | Salvador Dalí |
 | Arab | Major Drapkin & Co |
 | Arch Remark | Roger Shepard |
 | Architecture with built-in detonator | Jos de Mey |
 | Are you color blind ? | |
 | Arrows | |
 | Ascending and descending in LEGO | Andrew Lipson |
 | Ascending, descending | M.C. Escher |
 | Avalanche | Jim Warren |
 | B 13 | |
 | Balcony | István Orosz |
 | Ballerina in a Death's-Head | Salvador Dalí |
 | BBC Experiment 1 | Rupert Sheldrake |
 | BBC Experiment 2 | Rupert Sheldrake |
 | Beach boulevard | Jos de Mey |
 | Beanstalk | Gustave Verbeek |
 | Beefeater | Major Drapkin & Co |
 | Belvédčre | M.C. Escher |
 | Belvedere in LEGO | Andrew Lipson |
 | Between illusion and reality | Sandro Del-Prete |
 | Big Fun | John Langdon |
 | Bird cage | Jos de Mey |
 | Bird or island ? | Gustave Verbeek |
 | Bird or island in color | Gustave Verbeek |
 | Blaze 4 | Bridget Riley |
 | Blind spot | |
 | Block | Dirk Huizer |
 | Bobcats among us | Brian Hinkley |
 | Boy or man | Nati Shaked |
 | Bristol Café wall | |
 | Café wall illusion | |
 | Café wall illusion (animated) | |
 | Calvary | Octavio Ocampo |
 | Caryatids | Oscar Reutersvärd |
 | Castle in the sky | |
 | Castle of illusion | Irvine Peacock |
 | Cat or couple | |
 | Celestial bodies | Octavio Ocampo |
 | Checker Shadow | Ted Adelson |
 | Cheese pie | |
 | Chelsea pensioner | Major Drapkin & Co |
 | Chinese sign | |
 | Chinese Writing | |
 | Chromatic Adaptation | |
 | Clown and circus | Larry Kettlekamp |
 | Coca Cola | |
 | Columbus | István Orosz |
 | Columns | Shigeo Fukuda |
 | Construction scheme | |
 | Construction tools | |
 | Convex and concave | M.C. Escher |
 | Convict or general ? | |
 | Cosmic Temple | Pete Kelly |
 | Cover of 'Match' magazine | Salvador Dalí |
 | Crier | Major Drapkin & Co |
 | Crossroads | István Orosz |
 | Cube in blue | Monika Buch |
 | Cubes | |
 | Dallenbach's figure | |
 | Dancer | Major Drapkin & Co |
 | Death of a Bourgeois | Matheus Merian |
 | Deer | Donald Rust |
 | Den Leader | Brian Hinkley |
 | Dinosaur | |
 | Disappearing Dot | |
 | Distortion | Erhard Schön |
 | Diving board | |
 | Dolphin Bath | Sandro Del-Prete |
 | Donkey or seal ? | |
 | Double guarded gateway to wintery Arcadia | Jos de Mey |
 | Drawing hands | M.C. Escher |
 | Dreams | Donald Rust |
 | Duet : piano | Shigeo Fukuda |
 | Ebbinghaus Illusion | |
 | Ehrenstein Illusion | |
 | Einstein | Sandro Del-Prete |
 | Empire of lights | René Magritte |
 | Enchanted Sea | Jim Warren |
 | Eye examination chart | |
 | Face of Mae West Which May Be Used as an Apartment | Salvador Dalí |
 | False perspective | William Hogarth |
 | Fantasy Towers | Pete Kelly |
 | Ferris wheel illusion | |
 | Fifty Abstract Pictures Which ... Appear as the Head of a Royal Bengal Tiger | Salvador Dalí |
 | Find the fault no. 4 | |
 | Fishing At Eagle Rocks | John Van Straalen |
 | Five pigs | |
 | Five profiles | |
 | Flag afterimage | |
 | Flemish goodies | Jos de Mey |
 | For me ? | John Craig |
 | Forever always | Octavio Ocampo |
 | Frasers' spiral | James Fraser |
 | Friend or pirate ? | |
 | Frog and horse | |
 | Gala looking into the Mediterranean Sea | Salvador Dalí |
 | Gameboard | |
 | Games magazine | |
 | Garibaldi and Stalin | |
 | Gate to the next dimension | István Orosz |
 | Gateway to the 4th Dimension | Sandro Del-Prete |
 | Gesture of a ballerina | Sandro Del-Prete |
 | Ghostly afterimage | |
 | Gladiator | Major Drapkin & Co |
 | Gödel, Escher, Bach | Douglas R. Hofstadter |
 | Gone fishing | Donald Rust |
 | Gossip, and Satan came also | George A. Wotherspoon |
 | Great White | Donald Rust |
 | Happy Birthday | |
 | Happy or sad man | Rex Whistler |
 | Hawk or goose | |
 | Heart of Stone | |
 | Hering illusion | |
 | Holsteins - a Vermont parody of Pintos | Mike Mayone |
 | Horseman and Elf | Peter Newell |
 | House of stairs | M.C. Escher |
 | Human Skull Consisting of Seven Naked Women's Bodies | Salvador Dalí |
 | Humboldt House | |
 | Huntsman | Major Drapkin & Co |
 | Illusion in stone | Norman Parker |
 | Illusionary Studio with a Never Realized Painting from Magritte | Jos de Mey |
 | I'm so happy | John Craig |
 | I'm so tough | John Craig |
 | Images of illusion | Shigeo Fukuda |
 | Impossible Arches | |
 | Impossible bed | Marcel Duchamp |
 | Impossible Chess Set | Sandro Del-Prete |
 | Impossible cube | |
 | Impossible cube construction | |
 | Impossible cube drawing | |
 | Impossible doghouse | |
 | Impossible door | |
 | Impossible floor | |
 | Impossible Nature Morte | Gianni A. Sarcone |
 | Impossible pencils | Serhiy Grabarchuk |
 | Impossible Square | |
 | Impossible staircase | Oscar Reutersvärd |
 | Impossible stairs | |
 | Impossible triangle explanation | Oscar Reutersvärd |
 | Impossible triangle mirrored | Bruno Ernst |
 | Impossible wheel | |
 | Improbable screws and washers | Gianni A. Sarcone |
 | In the Eye of the Artist: Leonardo da Vinci | Sandro Del-Prete |
 | Indian | Major Drapkin & Co |
 | Indian or Eskimo | |
 | Invisible Afghan with the Apparition on the Beach of the Face of Garcia Lorca in the Form of a . . . | Salvador Dalí |
 | Invisible bust of Voltaire | Salvador Dalí |
 | Island with dogs | |
 | Italian Restaurant Illusion | Gianni A. Sarcone |
 | Jane Fonda | Octavio Ocampo |
 | Jastrow Illusion | Joseph Jastrow |
 | Judge magazine | |
 | Judge or soldier ? | Rex Whistler |
 | Jules Verne Anamorphosis | István Orosz |
 | Kanisza figure | Gaetano Kanisza |
 | Kitchen tools | |
 | Labyrinth : the movie | |
 | Lady in Field of Lilies | Octavio Ocampo |
 | L'Egs-istential Quandary | Roger Shepard |
 | Lens | |
 | Liar | Paul Agule |
 | Life in the rose | Sandro Del-Prete |
 | Little Lady Lovekins and Old Man Muffaroo | Gustave Verbeek |
 | Lord of the Dragon | Irvine Peacock |
 | Loss | Bridget Riley |
 | Love | Donald Rust |
 | Lupe Velez | Octavio Ocampo |
 | Mach's book | |
 | Maids and tramps | Peter Newell |
 | Man or mermaid ? | |
 | Man or woman ? | |
 | Man, or woman with child | |
 | Marlene Dietrich | Octavio Ocampo |
 | Meeting place | Brian Hinkley |
 | Message of Love from the Dolphins | Sandro Del-Prete |
 | Metamorphosis of a Man's Bust into a Scene Inspired by Vermeer | Salvador Dalí |
 | Minstrel | Major Drapkin & Co |
 | Miraculous sign | |
 | Mona Lisa's chair | Octavio Ocampo |
 | Mother, Father and Daughter | G.H. Fischer |
 | Mountaineer | Major Drapkin & Co |
 | Movement in Squares | Bridget Riley |
 | Moving Cirle | |
 | Moving cube | Gianni A. Sarcone |
 | Müller - Lyer illusion | Franz Müller - Lyer |
 | Müller - Lyer tickets | |
 | My husband and my father-in-law | Jack Botwinick |
 | My wife and my mother-in-law | W.E. Hill |
 | My wife and my mother-in-law (color) | |
 | Mysterious Mouth Appearing in the Back of My Nurse | Salvador Dalí |
 | Mystic wheel | Nicholas Wade |
 | Napoleon I | |
 | Natures embrace | Jim Warren |
 | Naughty fold | |
 | Nested Squares | Bruno Ernst |
 | Nightmare of the student architect | |
 | No Place Like Home | Donald Rust |
 | Old Age, Adolescence, Infancy (The Three Ages) | Salvador Dalí |
 | Old man or bride | |
 | On my mind | |
 | Open Cube | |
 | Opus | Oscar Reutersvärd |
 | Orbison Illusion | |
 | Other World II | M.C. Escher |
 | Ouchi Illusion | Hajime Ouchi |
 | Palm Sunday | Octavio Ocampo |
 | Paradise | Jim Warren |
 | Paranoiac Visage - The Postcard Transformed | Salvador Dalí |
 | Pergola | István Orosz |
 | Perspective distortion | |
 | Pierrot's Love | |
 | Piranesi in Budapest | István Orosz |
 | Poggendorff Illusion | |
 | Ponzo Illusion | Mario Ponzo |
 | Predator | Donald Rust |
 | Presidential puzzle | J.H. Hamburger |
 | Presidential puzzle | J.H. Hamburger |
 | Print gallery | M.C. Escher |
 | Purple Mountain's Majesty | John Van Straalen |
 | Puzzle : Find the mistress | |
 | Puzzle chromo | |
 | Puzzle Picture | Erhard Schön |
 | Puzzle Picture : Old Swiss Mill | Currier and Ives |
 | Quad Wheel | Sandro Del-Prete |
 | Rabbit or duck 1 | Joseph Jastrow |
 | Rabbit or duck 2 | |
 | Rabbit or duck 3 | |
 | Racketholder for an outdated player | Jos de Mey |
 | Railroad Gazetteer | |
 | Real impossible triangle | Mathieu Hamaekers |
 | Real Reversible Goblet | |
 | Relativity | M.C. Escher |
 | Retroactive | Nels Isralson |
 | Reversible goblet | Edgar J. Rubin |
 | Roman column | Walter Wick |
 | Romantic Day | Jim Warren |
 | Rotating Circles | Grelstaff & Pinna |
 | Ruin | |
 | Sailor | Major Drapkin & Co |
 | Sailor or soldier | Jack Botwinick |
 | Sara Nader | Roger Shepard |
 | Satyr ? | |
 | Schmidt Tea | |
 | Schröder stairs | |
 | Seal or bear ? | Gianni A. Sarcone |
 | Section of a cube | Mitsumasa Anno |
 | Seven Hearts | Jim Warren |
 | Seychelles 50 Rupees | |
 | Shades of green | |
 | Shades of pink | |
 | Shelf | Frans Erens |
 | Shepherd | Major Drapkin & Co |
 | Silhouette | |
 | Six beers | |
 | Ski Hill | |
 | Slave Market with the Disappearing Bust of Voltaire | Salvador Dalí |
 | Snake charmer | Major Drapkin & Co |
 | Society, a portrait | George A. Wotherspoon |
 | Soldier or bending man | |
 | Soldier Take Warning | Salvador Dalí |
 | Something wrong here ! | |
 | Spiral Staircase to Belvedere II | Sandro Del-Prete |
 | Spirit of the woods | Sandro Del-Prete |
 | St. George the dragon slayer | Sandro Del-Prete |
 | Swan or squirrel ? | |
 | Swans reflecting elephants | Salvador Dalí |
 | T. Elder Hearn, Illusionist | |
 | Teach and learn | Scott Kim |
 | Technical drawing | |
 | Telescope | Govert Schilling |
 | Ten friends | Donald Rust |
 | Terra Subterranea | Roger Shepard |
 | The ambassadors | Hans Holbein |
 | The Bend | |
 | The Blank Check | René Magritte |
 | The boys from Syracuse | Al Hirshfeld |
 | The columns | Sandro Del-Prete |
 | The courtyard | Irvine Peacock |
 | The Dream Taken by Wind and Time | Sandro Del-Prete |
 | The Fairy Palace | Gustave Verbeek |
 | The Garden Fence | Sandro Del-Prete |
 | The General's Family | Octavio Ocampo |
 | The Great Paranoiac | Salvador Dalí |
 | The Hermann grid | |
 | The hidden tiger | Donald Rust |
 | The human rights | Shigeo Fukuda |
 | The Image Disappears | Salvador Dalí |
 | The impossible christmas tree | Jos de Mey |
 | The impossible fork | |
 | The impossible triangle | Oscar Reutersvärd |
 | The invisible Neptune | Sandro Del-Prete |
 | The kiss | |
 | The kiss . . . and it's consequences | |
 | The magic window | István Orosz |
 | The Necker Cube | |
 | The owl on the gallow | Jos de Mey |
 | The pool | David MacDonald |
 | The puzzled fox | Currier and Ives |
 | The quadrature of the wheel | Sandro Del-Prete |
 | The Railway Bridge | Sandro Del-Prete |
 | The Russian imperial family | |
 | The Sander illusion | |
 | The secret face of Bush | |
 | The Skull of Zurbarán | Salvador Dalí |
 | The Staircase | |
 | The Stroop Effect | J. Ridley Stroop |
 | The Terrace | David MacDonald |
 | The Thrilling Adventure of the Dragon | Gustave Verbeek |
 | The tiger | |
 | The Tomb and Shade of Napoleon | Currier and Ives |
 | The tower of Babel on the North Sea beach | Jos de Mey |
 | The Vanishing Area Paradox | Martin Gardner |
 | The Vanishing Leprechaun | Pat Lyons |
 | The Venus of Lucas Cranach is hiding for a civilian | Jos de Mey |
 | The Wearisome and the Easy Way to the Top | Bruno Ernst |
 | The Well | István Orosz |
 | The window on the other side | Sandro Del-Prete |
 | Thiéry's figure | |
 | Three candles | Sandro Del-Prete |
 | Three islands | István Orosz |
 | Together | Jim Warren |
 | Transformation of 'Antiques' Magazine Cover into the Apparition of a Face | Salvador Dalí |
 | Tree with profiles | |
 | Truncated Tetrahedron | |
 | Turning the tables | Roger Shepard |
 | Up and down | M.C. Escher |
 | Up down | |
 | Upside Down | Scott Kim |
 | Valley of the tiger | Donald Rust |
 | Vanishing area paradox II | Martin Gardner |
 | Verbeek comic | Gustave Verbeek |
 | Violence and softness | Sandro Del-Prete |
 | Violets With Hidden Profiles | . Canu |
 | Visions of Quixote | Octavio Ocampo |
 | Vortex | |
 | Watch tower | |
 | Watchman | Major Drapkin & Co |
 | Water of life | Albrecht Buehler |
 | Waterfall | M.C. Escher |
 | Waterfall model | David Coen |
 | Wavy lines | |
 | What is it ? | |
 | What is it ? | |
 | What's wrong ? No 13 | |
 | Who is it ? | |
 | Wild Waters | Jim Warren |
 | Window Gazing | Sandro Del-Prete |
 | Wine cellar | Sandro Del-Prete |
 | Wobbly | |
 | Woman and beggars | Sandro Del-Prete |
 | Wooden box | |
 | Wooden triangle | |
 | Young and old couple | |
 | Young man/Old man | Rex Whistler |
 | Zeeuws meisje | |
 | Zig-Zag trophy | Jos de Mey |
 | Zöllner illusion | |
 | Zoo face | |