Drift through underground caves on a tube.

Everyone from Alan Ginsberg to The Rolling Stones has stopped by this classic dive bar.

Dine on ceviche tacos in the sea at this floating restaurant only accessible by boat.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

Thermal springs underneath the seabed provide the heat and bubbles for these beachside natural hot tubs.

The larger of two volcanic peaks rising out of the crystalline waters of the Caribbean.

A natural tidal swimming pool is ringed by bizarrely artistic lava rock formations.

Starting with nothing more than discarded conch shells, one man has built an island/bar that would make Jimmy Buffet jealous.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

Barbies stare from the walls, sit on the tables, and even pop out of cakes at this quirky cafe.

This pond is so stunning it looks like you've stepped into one of Monet's masterpieces.

Hot springs monkey spa in the middle of Hell's Valley.

A steaming, boiling hellscape sources Hokkaido's thermal baths.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

Race through the maze, get your name on the sign.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

A unique set of caves that spits waves back out into the ocean.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

Two rocks in a perpetual kiss and one of "the most romantic spot in America."

A 1920s home transformed into an immersive art experience, where every room is a portal to another realm.

A famous alternative culture epicenter and where Joplin serenaded young hippies.

At this 1940s-era neighborhood favorite, you can still drink a cherry phosphate.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.