This huge double-helix staircase is situated in the Vatican Museums in the Vatican City State. It may also be known as the "Momo Staircase" or the "Snail Staircase" and is one of the most photographed in the world as well as being one of the most beautiful and ornate.
It is often wrongly attributed to Donato Bramante, but was actually designed by the Italian architect Giuseppe Momo in 1932.
The stair is in two separated helix's which twist together to form a double helix, This formation would come to represent life later, in 1952 when the DNA Double Helix was discovered. Above the stair, a huge canopy provides light to illuminate the treads and ornate bronze balustrading. Here are a few sketches and photos of the iconic staircase.
by Ryan Tierney