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.
Completed in 2016 in Los Angeles, United States. Images by Brandon Shigeta. Los Angeles‐based architect Dan Brunn, AIA, Principal of Dan Brunn Architecture, redesigned the former Janss Family residence—a hub.