This former luxury resort in Kaua'i is now an abandoned relic.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

An ancient octagonal weather station named for the eight Greek gods of wind.

Legend says this sacred tree was a gift from goddess Athena.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This legendary city has been a tourist attraction for centuries.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

This stone tower was built to protect Crete from incoming pirates.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

One of the greatest collections of coins in the world is housed in the former mansion of an archeological pioneer.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

The drawbridge used in the filming of the movie 'Annie' has been in the open position as it was in the movie for decades.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

A quirky Poe-themed joint on an island keen to celebrate its overlooked connection to the famous writer.

Paths are maintained, but trees have taken over plots.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

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

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

A pair of black granite tails dive into a sea of grass in landlocked Vermont.

A set of medieval stained-glass windows tell the gruesome story of a Viking siege.

An impressive armored bronze effigy marks the tomb of one of the medieval era's greatest warriors.

A wonderfully eccentric Victorian-era museum and library.