07-24-2015, 05:21 PM
Browsing streetview, it looks like 9 West 23rd Street doesn't actually exist, at least, not in Manhattan. The building that is occupying where 9 would be has an address on 5th Ave.
https://goo.gl/maps/3fLdS
Though, the building across the street (also a building technically on 5th Ave) looks a bit like the Walper.
https://goo.gl/maps/3fLdS
Though, the building across the street (also a building technically on 5th Ave) looks a bit like the Walper.