This is "The Cabin" of ATO Records in New York - a two-room structure on their building’s roof which was disassembled, trucked in from Wisconsin or somewhere in the 50s and rebuilt on top of their old office around the corner of Wall Street.
I am sure these walls have some great stories to tell. Posters on the wall include Dave Matthews Band, My Morning Jacket, Drive-By Truckers, Old Crow Medicine Show and many more.