The land for Bronx Park was acquired with funds authorized by the 1884 New Parks Act. The original 640 acres (2.6 km2) were acquired in 1888-1889. The northernmost 250 acres (1.0 km2) were allocated in 1891 to the New York Botanical Society. Another 250 acres (1.0 km2) was allocated in 1898 to the New York Zoological Society. An additional 66 acres (270,000 m2) were acquired in 1906, at the southeast end of the park; this area is now known as Ranaqua, and is where the Parks headquarters is located.