The modern double helix staircase, also in the Pio-Clementine Museum, and commonly referred to as the “Bramante Staircase”, was designed by Giuseppe Momo (it) in 1932 and was inspired by the original Bramante Staircase. This staircase, like the original, is a double helix, having two staircases allowing people to ascend without meeting people descending; as with the original the main purpose being to allow uninterrupted traffic in each direction.
Photograph by Tonnaja Anan Charoenkal | Shutterstock
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