Home to numerous museums, temples, and the oldest zoo in Japan, Ueno Park reigns supreme as one of Tokyo’s top tourist attractions. Most likely, any visitor to the city finds themselves walking in this park sooner or later, at least once during their trip. Once part of the huge temple complex of Kan’ei-ji, the park itself boasts plenty of interesting landmarks, from an abandoned train station to the face-only Great Buddha. There is another unusual attraction hiding in plain sight, where most visitors simply walk past unaware of its existence. The Suribachiyama tumulus,…