6. The Original Coal Boilers Are Still in the Basement of the Flatiron Building

Boiler in the basement of the Flatiron building

Not only is the original water hydraulic system still located in the second lower level of the basement, but the three original 1903 coal-fed boilers are also still in place next to a far smaller more modern boiler three levels down. Coal was stored in storage units that have been cinderblocked up. There used to be an elevator that would transport the coal down from street level, and behind a door in the wall, you can still see up that shaft to the sidewalk and sky. This system is similar to but pre-dates the power plant below the New Yorker Hotel.