Varosha became a ghost town in the wake of Turkey's 1974 peace operation on the island in response to a coup aimed at Cyprus' annexation by Greece. Entry into the town was prohibited except for Turkish army personnel stationed in the TRNC for decades, but since 2020 it's in the process of partial reopening to the public.
Pripyat was abandoned following the worst nuclear disaster in human history. An explosion in a reactor at the Chernobyl Nuclear Power Plant left swathes of Ukraine and neighboring Belarus badly contaminated and led to the creation of a no man's land within a 30-kilometer (19-mile) radius of the plant.