In Berlin itself, there are some 3.4 million people, but in the larger Berlin-Brandenburg metropolitan area, the number climbs to 5 million. About a third of the city terrain is forested, with the Grunewald district being one of the most popular for Berlin real estate in terms of both its location and history. The river Havel separates Grunewald from Spandau, and it is bordered by the localities of Westend, Halensee, Schmargendorf, Wilhelmstadt, Gatow, Nikolassee, Zehlendorf, and Dahlem.