In the small town of Ashland, Pennsylvania, Route 61 takes an unexplained detour; a “Keep Out” sign straddles the original highway. Ignore the warning and you'll arrive in the abandoned town of Centralia, where an underground mine fire has been burning since 1962 when residents accidentally ignited a vein of anthracite coal. Despite efforts stop the fire it still burns today and could burn for 250 years. Been here!
Okpo Land, S. Korea. The park was shut down in 1999 after a number of fatal accidents, the last when a young girl tragically fell to her death from a ride. Immediately after that incident, the owner of the park disappeared and was never heard from again