Z-cube by Georg Malin

These letter formations can be up to five meters high, yet they still encircle the cube. When you look at the Z cube, you notice that the shaft of the letter that connects the upper and lower crossbars runs "wrong": instead of running from top right to bottom left, it connects top left to bottom right. The Z is therefore drawn mirror-inverted. However, if you look through the sculpture to the opposite side of the cube, you can see the letter Z spelled correctly. The front of the cube thus shows the back of the letter, the letter is written on the inside of the cube, and only when you stand in the center of the cube does the sign make sense.