The patch of land below the memorial was gifted by the British to the United States.

An exercise in radical design and social living that became the epicenter of Soviet spy networks in London.

The only rotating bar in New Orleans has been slowly spinning since 1949.

According to folklore, Vermont's slanted windows were installed to keep witches from flying into the house.

It's possible to walk inside one of the largest Neolithic tombs in Britain.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

Once America's longest-manned military fort, now an abandoned hulk.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

Built to test magnetically levitated elevators, the tower also boasts Germany's highest visitor platform.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

This 1920s masterpiece of French Quarter architecture hides a secret tunnel used by Albert Einstein.

A wall within the institution displays the names of 13,000 Jews who took refuge in the city during World War II.

An L.A. traffic island where the faces of locals have been carved into massive granite eggs.

A herd of colorfully painted bovine statues can be found in the middle of "cowtown."

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The world's first purpose-built motor racetrack was destroyed by the outbreak of two world wars.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

More than 200 unconventional musical instruments that anyone can play.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

A replica of the steam engine that hauled Queen Victoria's Royal Train is on display at Windsor.

Once an ancient Roman bath, now a hotbed of geothermal energy and a hub for energetic innovations.

A fake town founded by Western movie stars is now becoming a hip desert community.