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

This blowhole is supposedly caused by a trapped monster.

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

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

This black shoreline is made up of exploded lava particles.

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

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

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

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

It was once nicknamed "the most bombed hotel in Europe."

The second-longest pier in the U.K. stretches a whole kilometer into the Irish Sea.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

A hundred copies of Antony Gormley's naked body stare out across the water.

This aging storage facility is the world's largest brick warehouse.

The tower was originally used as a chimney for the waste incinerator of St. John's Precinct and Market.

The red letters in the literary pavement leading to the library form a mysterious code.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

Pyramid shaped monument with a tall tale attached.

19th century tunnels burrowed under Liverpool.

Final resting place of John Middleton "The Childe of Hale."

The Liverpool street made famous by the Beatles is real.

A thousand year old oak tree survives in Liverpool.

Six neolithic sandstone boulders remaining from a dolmen.