Just a short train ride from the booming city of Berlin lies a vast, quiet landscape with a storied past—the Döberitz Heide. What was once one of Germany’s most prestigious military training grounds is now a massive nature park. But if you look closely, leftovers of its dramatic history still peek through the forest foliage. For urban explorers, history buffs, and nature lovers alike, the Döberitz Heide bunkers and their surroundings offer a fascinating glimpse into an almost forgotten ...