9. North Sentinel Island, India
One of the Andaman Islands in the Bay of Bengal, North Sentinel Island is nominally part of India. However, it is also home to the world’s most secluded indigenous population to such an extent that almost nothing is even known about their culture or language. The Sentinelese are believed to number anywhere between 50 and 400, but they do not take kindly to outsiders. It is certainly not a place where you want to end up getting stranded as you won’t get a warm welcome by the combative residents.

10. River Nile, Egypt
Admittedly, the muddy waters of the River Nile don’t look like a very inviting place to take a dip, but it’s not the mud that’s the problem. Beneath the surface of the world’s mightiest river lurk the most dangerous of all crocodiles – the Nile crocodile. There are some half a million of these highly aggressive predators in the region and, if that’s not enough, the river is also full of piranha-like tiger fish. Stick to the hotel pool.
