A hypercube
Attilio Pierelli's hypercube in Viterbo. The sculpture can be interpreted as the projection in the three-dimensional space of an hypercube (that is one of the six regular polytopes in dimension 4): in this interpretation, it has the same symmetry of the cube.
© matematita
The image belongs to the sections...:
Schlegel diagram of a hypercube (4D geometry)
Sculptures (Anthology of images)
Sculptures (Symmetry)
Suggestions about 4d from 3d-world (4D geometry)