6. Remnants of the original Penn Station
A cast-iron partition in the Long Island Railroad waiting room is one of the several remnants of the original Penn Station that still exist within the current station. The entryway survived since it was walled off during the demolition and forgotten for 30 years.
Throughout the station are also original brass and wrought iron staircases that simply stayed put during renovations. Some original glass brick flooring, that initially allowed natural light to reach lower levels, is still there, as well as the original coal-fired power plant of the station.