Druid Hill Park is a 745-acre (3.01 km2) urban park in northwest Baltimore, Maryland. Its boundaries are marked by Druid Park Drive (north), Swann Drive and Reisterstown Road (west and south), and the Jones Falls Expressway / Interstate 83 (east). Inaugurated in 1860, under the administration of city Mayor Thomas Swann, Druid Hill Park ranks with Central Park (begun in 1858) in New York City, Fairmount Park (1812) in Philadelphia and Golden Gate Park in San Francisco as the oldest landscaped public parks in the United States.