13.The town of Ozyorsk from Russia is a restricted place especially for newcomers. It is because the town is close to the Mayak plant which is highly polluted.
14.The Svalbard Global Seed Vault which is located around 800 miles south of the North Pole stores over 4.5 million varieties of crops. The effort is to preserve these crops, so only a few scientists are allowed to enter the place.
15.Korean demilitarized zone was created between North and South Korea after the infamous Korean War. The place is also one of the most guarded areas on planet.