What better way for a ceramic tile company to advertise their wares than in their own hallway? Casa Ceramica released a cool video showing how they created their trippy hallway in their Manchester offices.
The floor — which is made of 400 individual porcelain tiles — looks like it has a giant dent in the middle, but it's actually completely level. Even more mind-boggling, the optical illusion only works when you face the showroom's entrance. The "dent" in the floor disappears when you look at it from the opposite perspective.