Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

This Denmark theme park is part family attraction, part experimental archaeology project.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

Five ancient libraries, little changed for centuries, preserve a medieval archive of Quranic lore and civic documents

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

A once great mansion stands in stately ruin.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

Explore the ruins of war and maritime history along this gorgeously ferocious North Atlantic seascape.

A jewel of the Mexico city skyline now slowly crumbles after surviving an earthquake.

In which a local geological marvel becomes a quaint roadside attraction.

This former fascist summer camp was abandoned for decades.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

This crescent-shaped sliver of sand is a magical haven for a herd of feral horses.

Dedicated to an "Unknown Man," this grave holds either the remains of a lovelorn suicide or a Cold War spy.

An unfinished rail tunnel that has since been used to house cheese and bats.

Dating back almost 400 years, the oldest public collection library in the United Kingdom was once the study hall of Karl Marx.

The creek where a shark wreaked terror upon New Jersey, and served as the inspiration for "Jaws."

This logic-defying 16th-century Tudor manor still stands to the delight and astonishment of onlookers.

Deadliest lake in the world suffocated over 1,746 people in one night.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.