37 Abandoned Resorts From a Bygone Era You Can Still Visit

31. Teufelsberg (Berlin, Germany): Cold War Listening Post

Atop an artificial hill made from WWII rubble in Berlin's Grunewald forest sit the iconic geodesic domes of Teufelsberg ("Devil's Mountain"). This was a major US National Security Agency listening station during the Cold War, eavesdropping on East Berlin and beyond. Abandoned after the fall of the Berlin Wall, the facility fell into disrepair. Today, the graffiti-covered structures and dilapidated radomes create a unique, eerie landscape, offering panoramic city views and attracting artists, history buffs, and urban explorers intrigued by its Cold War espionage past.