Doris Duke's lasting collection of Islamic Art, hidden in a Hawaiian paradise.

A once-glowing grotto at the bottom of Waikapalae Wet Cave.

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

Once home to over 8,000 exiled Hawaiians suffering from Hansen's Disease.

A cooled lava flow from the Haleakalā volcano formed these surreal-looking columnar basalt structures.

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

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

A priest with no formal artistic training used basic house paint to create gorgeous religious scenes inside this historic church.

These ancient sacred grounds granted amnesty to those who managed to reach them.

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

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

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

A supply store for traditional healers, this shop sells the hair of a dog--and its skin, skeleton, and reproductive organs, too.

Water of undetermined depth has attracted rare fish and cult leaders alike.

The contents of this safe survived a 37-kiloton nuclear bomb.

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

Bringing back the art of handmade custom coffins.

Preserving the remains of Native American cultures which otherwise would have been submerged behind Hoover Dam.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

This famous Nevada gold mine, once a hotbed of Wild West shenanigans, is now open for tours.

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

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.