The American Archetype subway kiosk is based on the Interborough Rapid Transit Company (IRT) cast-iron prototypes used in New York City from the early 1900s to the mid to late 1950s. These served as covers to New York's subway system stairwells and used a domed roof for entrances and a pyramid roof for exits. The kiosks were most often placed inline within 50-100 feet apart on city sidewalks, usually with the entrance in front of the exit and both facing the same direction. A modern, double-width replica is in use today in Manhattan's Astor Place, although this replica is painted a much brighter green than the kiosks' original olive drab color.