Named after the park, renamed The Green Park in 1746.
Charles II made the Sandpit Field into a royal park in 1668 as Upper St James's Park. The new name probably reflected its nature then, an open meadow with few trees; even today it has no formal flower beds, only naturalised narcissus. The station opened in 1906 as Dover Street, after the street it stood in, and took the park's name in 1933.