The Island of Dolls, Mexico

The Island of Dolls (Isla de la Munecas) is located in the canals that lies to the south of Mexico City, close to Xochimilco. The story tells that half century ago a little girl drowned in one of these canals. The Island has only one permanent inhabitant, an hermit called Don Julian Santana Barrera. After the death of the little girl he fished out one doll from a canal, thinking was a sign from the evil spirit Barrera decided to hanging the dolls on the trees, making the Island into a shrine to calm the spirit of the dead girl. The dolls have missing eyes and other body parts. Don Julian Santana lived in the Island for 50 years and died in 2001. He was found drowned in the same canal he believed the girl died.

Sleep in a sphere...suspended!

I'm sure your childhood tree house didn't look like that. Suspended 10 feet of the ground, these spheres are unique in the world. Located  30 km north Parksville on Vancouver Island. Such magical experience that starts once you break the contact with the ground, and different for every individual.
Check out free spirit spheres

Weird Places, McMurdo Dry Valleys Antarctic

Is the largest ice-free region in Antarctica. 15.000 km2 area. Its landscape includes glaciers, mountain ranges, ice-covered lakes, sand dunes, wathershed system. It's a region where life exists at the very extreme enviromental  limits.

Since 1995 tourists have visited Taylor Valley.
Here you have tour operator links
Aurora Expeditions
Heritage Expeditions
Quark Expeditions