city. To accomplish this goal, the entrance at Overlook Terrace was placed on city-owned property near the station, and the entrance at Fort Washington Avenue between 183rd and 185th Streets was placed in a building. The entrances at Fort Washington Avenue at 181st Street could not be erected within buildings. The entrance at Overlook Terrace leads to a passageway to the northern mezzanine. This entrance is accessed from a single-story head house with a stepped roof and a facade of stone and ashlar. This headhouse contains two arches surrounded by interlacing diamond motifs; there are wooden doors within each arch. A backlit, Art Deco "Subway" sign is located above and in between the archways, atop a stone pedestal. The entrance on Fort Washington Avenue between 183rd and 185th Streets leads to three elevators that descend to mezzanine level. It is entered from a single-story stone vestibule with a pointed diamond-shaped arch surrounded by an interlacing diamond motif. The arch is surrounded by zigzag motifs, and there is a backlit Art Deco "Subway" sign above this arch. In addition, four wooden doors are recessed within the entrance vestibule. The top of the entrance vestibule contains zigzagging horizontal lines. The vestibule leads to a slightly recessed masonry structure that rises two stories above the height of Fort Washington Avenue. The masonry structure forms the top of a seven-story mechanical structure with an emergency staircase, the three elevators, and the station's ventilation system. The entrance at Fort Washington Avenue and 181st Street consists of four stairs, two to each southern corner of the intersection. These stairs lead to a small landing immediately below the intersection, which in turn leads to the escalators that descend to the southern mezzanine. Elevators The highest natural point on Manhattan Island is in Bennett Park, adjacent to the station exit on Fort Washington Avenue between West 183rd and 185th Streets (along the axis of where West 184th Street would be located). Because of the station's depth, long escalators lead to 181st Street at the south end, and elevators at the north end of the station carry passengers to the Bennett Park exit. The elevators were formerly only open during the daytime and required the payment of a fare to use. Since 1957, the elevators have not required the payment of a fare, so pedestrians traveling between Overlook Terrace and Fort Washington Avenue are allowed to use the elevators