The world is full of swimming holes, but few compare to Samoa’s idyllic To Sua ocean trench.

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

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

A tunnel of hardened lava along Maui’s famous Road to Hana.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

Watch the newest land on the planet form before your eyes.

This black shoreline is made up of exploded lava particles.

A true treehouse near Hawai'i Volcanoes National Park.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

An ice cream parlor chain that caters to vegans and pinball fans equally.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

A giant Troll lurks under one of Seattle's oldest bridges.

A Boeing mechanic and his wife leave a whimsical, stone sculptured garden as their legacy.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

Mine your own precious stones.

A haunted hot springs hotel that went from healing retreat to asylum before it was restored.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

Treehouse motel and treehouse-building school.

A botanic garden full of trees twisted into fantastic shapes and positions.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.