It ignites a sense of childish fun in even the most serious ... Entry to Camera Obscura and World of Illusions costs 21.95 pounds (about $27) for adults and 16.95 pounds (about $21) for children ...

Optical illusions are tricky but fun visuals that help us see things in ... them every day can help prevent cognitive decline in many adults. These optical illusion puzzles or riddles have become ...