In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A huge musical instrument played by the ocean.

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

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

Get up close and personal with these majestic fish.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

Submerged lava formations create incredible waterworks.

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

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

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

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

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

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

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

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