3. Pripyat, Ukraine
An abandoned city, located in northern Ukraine, once bustled with almost 500,000 residents is now a radioactive ghost town over-run by nature. In 1986, Pripyat became a ground zero for the deadliest nuclear disaster in history when an ‘accident’ destroyed a reactor and caused deadly radiation to spread throughout the city. The levels of radiation remain too high for people to live there again though it’s safe for tourist to visit. The city will stay abandoned forever, as that much radiation won’t vanish for hundreds of years.