When you think about it, the world doesn't seem to be such a small place after all. Don't expect a warm reception or tourist friendly services at these places since some of them might just put your life in danger or make your visit a living nightmare. So be careful what you wish for

Some contributors mentioned these destinations as hard and almost impossible to visit.

1. North Sentinel Island

North Sentinel Island is located near the Andaman and Nicobar islands and is home to the Sentinelese tribe who do not welcome any contact from the outside world. Even after the 2004 tsunami when rescuers tried to find out if the tribes had survived, their relief parcels were reciprocated with spears and arrows. Anthropologists have given up studying about the tribesmen due to their potential wrath of killing outsiders on sight. The only images that exist of these people are from satellite photos and spy cameras.

While Ethiopia and Sudan suffered from famine, there were no official reports on the status of Eritrea. The east African nation's human rights record is unknown, considering that many refugees from the country try to enter Europe by crossing the Mediterranean Sea by boat.

If you do interact with any of them, they are assigned by the government to speak to you and display North Korean hospitality. If you thought you can enter Pyongyang through Seoul, think again. You can only fly in through Beijing.