One of the best beaches in the entire world.

Australian Lake set aglow by Noctiluca Scintillans.

A seemingly endless landscape of pure salt stretches far across Bolivia.

A clear example of the process of erosion in action.

Dilapidated ruins that once treated a notorious young serial killer, currently hosting vandals, squatters, and ghost hunters.

This picturesque mansion has gone from opulent ruin to nature museum.

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

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

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Stunning wetlands ablaze with pink lotus flowers.

An ethereal glowing blue ocean cave in Croatia.

These azure waters were thought to lead to the Mayan Underworld.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

Bring your hiking shoes, wool socks, and thermal underwear for a stay in these cozy forest huts.

One of the world's largest ice festivals dazzles visitors for over a month with radiant sculptures and carvings.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The decaying ruins of Wales' first asylum for the mentally ill.

Norway's chilly all ice-instrument festival.

Walk 2,300 feet above the ground on the "Troll's Tongue."

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.