Illusions These paintings are also included in the other galleries but are collected here as they all contain optical illusion. Nightfall (2000) The Invisible Tor (1) Agrion (2003) The Riddle of the Moon (2003) Winter Sunlight in the Gallery (2003) Wick Water-Treatment Plant (2011) Through the Fence - Original Version (1997) Three Cooking Apples (2011) The Scarlet Rope (1999) The Old Tree (2003) The Odd Frame (c. 2004) The Left-Hander (2011) The Green Knight (2004) Gale Warning - The Notice Board (2011) Sunlight on the Floor (2003) Study for an Impossible Viaduct (2007) Flying Rumours (1997) The Invisible Tor (2) - Escher's Puddle (2003) Delaja's Tor (2003) A Game of Croquet (2004) The White Table (2015) A Group of Leaf Beetles paying tribute to Sir Winston (1997) Autumn Metamorphosis (1978) Double Reflection (1991) Evening Flight (1978) Evening Landscape (2000) Ghosts of Four Horses in a Cave (1976) Invisible City (1987) Landscape with Teeth (1981) No Way Down (1994) Portrait of Richard Owen (2001) The Escape - Third Version (c2000) The Stone Circle (1984) In the House of the Magician (1973) The Prisoner (1973) Nutkin Stairs Peter Rabbit Descent with Modification (2001) The Visit (2019)