An 11th-century mountaintop fortress that played a crucial role in Italy's papal wars is now a vacation rental.

One of the most remote lodges in the Amazon offers rare wildlife encounters and undisturbed views of the Peruvian rainforest.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

The 20-mile causeway that separates the Netherlands from the sea.

The granite head appears to be deep in thought and half buried in the ground.

One of the Leiden's oldest pubs is also the birthplace of the Heineken star.

The show's fictional Korean medical camp was created in the Santa Monica hills.

This beautiful site is where the first transatlantic telegraph was sent from.

A bright and wacky exhibit answers every question you may have had about human excrement, flatulence, and more.

The only substantial part of Nazi Germany's formidable defensive line through Northern Italy that survives today, largely intact.

London's only public statue of the much-married monarch adorns the gate to St Bartholomew’s Hospital.

The deserted railroad town had a last gasp as a ghost town attraction before being abandoned for good.

The obelisk honors the cyclist troops who were killed during World War I.

A mesmerizing landscape of 18th-century cellars carved out of the land.

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

A young Italian couple has been locked in an embrace for over 6,000 years.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

It's estimated that half of the world's gold was mined from South Africa's "golden arc."

The remote graves mark the mysterious deaths of four 19th century explorers.

A Bhutanese temple gifted from the isolated Himalayan kingdom is now a surprising cultural gem located at the University of Texas at El Paso.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.