Green Park is a London Underground station located on the edge of Green Park, with entrances on both sides of Piccadilly. It is served by the Jubilee, Piccadilly and Victoria lines. On the Jubilee line it is between Bond Street and Westminster; on the Piccadilly line it is between Piccadilly Circus and Hyde Park Corner and on the Victoria line it is between Victoria and Oxford Circus. It is in fare zone 1.
The station was opened in 1906 by the Great Northern, Piccadilly and Brompton Railway and was originally named Dover Street due to its location in that street. It was modernised in the 1930s when lifts were replaced with escalators and extended in the 1960s and 1970s when the Victoria and Jubilee lines were constructed.
Wikipedia https://en.wikipedia.org/wiki/Green_Park_tube_station
Address 79 Piccadilly, London W1J 7NE, United Kingdom
Coordinates 51°30'23.829" N -0°8'34.481" E