This 5-by-6-foot wooden hut is the smallest historic post office in the U.S.

Everyone and everything one man ever loved and lost, now stare into the East for all eternity.

Legend says one of the world's largest marine geysers is actually a whale that got wedged within the rocks.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

A circle of giant painted vases in the former pottery capital of the United States.

Enormous lake at the bottom of a unique cave system.

Live long and prosper in Tennessee.

The picturesque southern city served as the zombie-filled town of Woodbury in 'The Walking Dead.'

This ever-changing arrangement of naked dolls even caught the attention of "The Walking Dead" crew.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

Meet manatees face-to-face at this zoo for native species.

The most northern place on the mainland of Great Britain.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

A sea cave with a waterfall and Viking past

This early version of the guillotine was used to execute the man responsible for its construction.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

The most loyal of little dogs, or a Victorian era publicity stunt?

Protecting the dead from opportunistic body snatchers.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

A book bound in the skin of an infamous criminal, along with countless other specimens.