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

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

The first spinning jail built in the United States is the only one that still turns.

Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

Stay in a room with a view... of the bottom of the ocean.

The world's only underwater laboratory where "aquanauts" study oceanic life.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

This tiny cluster of abandoned buildings looks like the future of the ghost town - today!

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

The highest point in Nevada had to be decided by court order after California tried to claim it as their own.

Hidden beneath a lake for decades, this brutalist mine has now emerged from beneath the receding waters.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

The echoes of a railroad town that solemnly mark the end of the line.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Towering basalt columns, a creation of fire and ice.

Four hundred granite steps were built into this massive rock by the National Park Service.

These millipedes glow not out of attraction, but as a not-too-subtle warning.