Herăstrău Park is a large park on the northern side of Bucharest around Herăstrău Lake, one of the lakes formed by Colentina River.
The park has an area of about 1.1 square kilometers, of which 0.7 square kilometers is the lake. Initially, the area was full of marshes, but these were drained between 1930 and 1935, and the park was opened in 1936.
The park was initially intended to be called Parcul Național (National Park), but it was renamed Parcul Carol II during the period of the Carol II of Romania's cult of personality. Following WWII, it was renamed Parcul I. V. Stalin, featuring a statue of Stalin at its entrance. The park was renamed and the statue was torn down in 1956 as part of the De-Stalinization in Romania.
Its current name, Herăstrău, named after the Herăstrău lake, has its origin in a dialectal version of the word "ferăstrău" in standard Romanian, meaning saw or sawmill, referring to the water-powered sawmills that were once found the Colentina river which flowed through it.