World's most photographed spiral staircase at the Vatican Museums. Designed by Giuseppe Momo in The stairs are actually two separate helixes, one leading up and the other leading down, that twist together in a double helix formation.
Baron Empain palace is one of the wonders that are found in Egypt. Many stories about ghosts' deeds in the palace. Who is Baron Empain? Why did he choose Egypt for his palace. Are the ghost stories are real?
This green "Eye" is formed by a tall spiral staircase in a brick tower, reaching toward the bell inside the Lamberti Tower, Verona Italy. (You are looking upward into the bell tower:) By Davide Lombardi