5
Places where such a great calamity occurred, the events are practically synonymous with the name of the location
(lemmy.world)
Chernobyl, site of a nuclear reactor meltdown
Pompeii, city lost to a volcanic eruption
Auschwitz, complex of concentration and extermination camps
Kind of obscure, but Centralia, a town that had to be evacuated because there's a coal mine burning under it.