This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

World's largest cave was only discovered in 1991, and now offers tours to the public.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

A house carved into a rock in the 1940s.

Every equinox this Maya pyramid puts on a spooky ancient light show.

The subtle science of a master molecular gastronomist.

One of the most remarkable caves in all of Iceland was created by a once raging river of lava.

These eerie outliers of the lightning bug family glow a mysterious blue color.

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

Introducing the Green Fairy to her fawning masses.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

Australian Lake set aglow by Noctiluca Scintillans.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

A magically clear, blue river that seems to spring from nowhere.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

Rent out a glass igloo to watch the Northern Lights like you live in the future.