At first glance, the steps above look like any other staircase, but when you  follow the stairs you’ll realise the whole structure is impossible! Any person who dared to use these stairs would be climbing up or going down them forever! This illustration is an example of an impossible object, and was designed by Swedish graphic artist, Oscar Reutersvärd.

Upstairs downstairs

Another impossible object is the Penrose staircase and was created by mathematician Lionel Penrose and his son Roger after they were inspired by the Dutch graphic artist M.C. Escher.

Under the illusion

In order to further bend our minds, the Penroses also created the impossible triangle. This is another mind-bending mathematical object that creates an optical illusion which can be represented in a perspective drawing, but can never exist as a solid object in the real world.