This ancient Hawaiian henge may have been an early star chart.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

A Hawaiian stairway to heaven—that you can't climb.

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

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

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.

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

A beach made of semi-precious green sand on the Big Island of Hawai'i.

Try your hand at old-fashioned coffee growing at this museum devoted to one of the world's most coveted beans.

This black shoreline is made up of exploded lava particles.

This legendary urban waterfall creates a dazzling display of rainbows.

A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

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