Sphere Within Sphere by Pomodoro in the Cortile della Pigna, Vatican, Rome. Arnaldo Pomodoro is an Italian sculptor. He was born in Morciano, Romagna, Italy.

Spiral staircase is one of the greatest inventions of architecture. They make people look up (or drop down) and admire the amazing symmetry. But often they may cause dizziness.

3D image presents perhaps one of the most beautiful, famous and often photographed staircases in the world, the staircase, which is located in the Vatican.