The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

Disks are rolled out onto the south lawn to absorb the impact of Marine One's wheels like giant coffee coasters.

Where the U.S. government kept its actual treasure, before Fort Knox.

At least according to the Guinness World Records.

The highest peak in mainland Spain is said to be the final resting place of a Muslim king.

This abandoned, turn-of-the-century astronomy hub is now the subject of more photographs than it ever took.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Single runway interrupted by a busy road that cuts across its middle.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

Red, white, and blue painted steps along with a Union Jack celebrate the outcome of Gibraltar's 1967 referendum.

The final resting place of the great navigator, or maybe his brother.

The world's largest wooden structure.

The defensive tower was built centuries ago to warn locals of Berber pirate attacks.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

Despite the name, this narrow bridge isn't very dangerous at all.

One man’s hobby is another man’s world of metal wonders.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

A museum dedicated exclusively to the lore and history of ouija boards.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.