7. North Sentinel Island located off the coast of India is the home of the Sentinel tribe. Nobody is allowed to enter the place. The ones who have tried to enter have been met with arrows and rocks and were brutally killed by the tribe people.
The government tried their level best to make peace with the members of tribe but finally decided to let them live the way they wanted to in 1964.
8. The Chernobyl disaster which was a nuclear accident that happened on April 26 1986 in a town of Ukraine caused a lot of radioactivity spread throughout the city.
The next day all 14,000 residents were evacuated from the area and till today, the area is more of a ghost town. Nobody lives there. Permission to enter the place is only granted to researchers and investigators.