Vana-Mustamäe is a neighborhood of Nõmme in Tallinn, the capital of Estonia. It has a population of 2,066. It borders Hiiu and Pääsküla to the south, Nõmme to the southeast, Mustamäe to the northeast, Kadaka to the north, Astangu to the northwest, and Mäeküla to the west. It's the location of Glehn Castle. Wikipedia