This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

The shape of this old salt factory complex was inspired by the course of the Sun.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

The world's tallest bridge is also possibly the most elegant.

These ruins reveal the remarkably intact layout of a Roman marketplace.

This stunning French estate was so lavish that it landed its original owner in jail for the rest of his life.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Elvis's own personal tropical hideaway.

A mechanized clock where a man fights off a dragon, crab, and rooster.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

A beer pipeline runs beneath Bruges.

A medieval house adorned with enigmatic carvings, including one of a man displaying his masculine attributes.

Former hunting lodge of a duke who was an avid collector of impressionist works.

Regency-era excess on the English Coast.

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

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.