Here's the Museum's description of what they are all about:
Step into a world of wonder at Museum of Illusions London, located in the heart of the city on Tottenham Court Road. With more than 70 immersive exhibits, this attraction invites you to become part of the illusion, offering a hands-on experience that’s perfect for all ages.
Explore vortex tunnels, infinity rooms and walk-in kaleidoscopes, and discover London-themed illusions like 10 Downing Street in the “building hang”. Shrink your siblings in the Ames Room, swap noses with a friend, walk up a red London phone box, or lose yourself in the Infinity Room. Each illusion includes a simple explanation, so you’ll learn the science behind the trick as you explore.

