For Halloween, Web Urbanist has photographs of 24 abandoned towns and cities round the world.
Centralia, Pennsylvania, just down the road from my own Pennsylvania hometown makes the list. Someone burning trash in a stripping pit near the town in 1962 managed to set fire to a vein of coal. The subterranean fire gradually encroached on residences, and in the mid-1980s the federal government ultimately gave Centralians new houses in order to induce them to move away from the hazard. Some diehards angling for larger payoffs refused to move and remain in residence today. When I was a kid, we used to find it terribly amusing to see smoke rising from the ground of Centralia’s cemetery.