On the western part of the McGraw-Hill Building, there is a hidden gem for all lovers of architecture. It's been here for quite a while now - since 1975. Come walk through the waterfall and don't worry about the water splashing on your clothes - the tunnel is well designed.
Address McGraw-Hill Building, 1221 6th Avenue, New York City, New York 10019, USA
Coordinates 40°45'33.823" N -73°58'56.197" E