Zvezdara Forest

Zvezdara Forest (Zvezdarska šuma or Zvezdani Gaj, Serbian Cyrillic: Звездарска шума or Звездани гај) After Topčider and Košutnjak, Zvezdara is the largest forest in the urban zone of Belgrade, a crescent-shaped wooded area which covers most of the Zvezdara Hill. Northern and eastern border of the wood is formed mostly by the Dragoslava Srejovića street. It borders the neighborhoods of Karaburma on the north, Ćalije on the north-east, Mirijevo on the east, Cvetkova Pijaca on the south and Zvezdara itself on the west.
In the beginning of the 20th century the Veliki Vračar Hill area was designed for afforestation. After the construction of observatory in 1929-32 on top of the hill, the forest creation began making a unique artificially created green zone in Belgrade's urban tissue. Today, observatory is roughly in the middle of the forest.

Zvezdara Forest today covers an area of 137 hectares, out of which 21 hectare is arranged as a park. [4] Apart from observatory, objects within the forest or near it include the "Mihajlo Pupin Institute" in the north-central and seven small stadiums (FK "29. Novembar", FK "Zvezdara", FK "Mladi proleteri") in the norh-western section. Patches of northern section are urbanized, forming a neighborhood of Zvezdara II (especially along the Dragoslava Srejovića street). Forest is also damaged by the unauthorized individual residential construction, so in 2007 Belgrade City government announced further plans to extend Zvezdara Forest to the north and south, connecting it in the process to Ada Huja and Šumice, respectively, either as real park or just avenues, and thus creating Belgrade's greenway.
http://en.wikipedia.org/wiki/Zvezdara