Upscale Grunewald encompasses the huge forest of the same name and a residential area of elegant villas and hotels. Teufelsberg is an artificial hill made from WWII rubble, topped by a Cold War-era listening station now open for tours. Nearby are Teufelssee lake and the hands-on nature center Ökowerk. The Platform 17 Memorial at Grunewald Station commemorates the Jewish deportations that took place from there.