Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

There has been an astronomical clock on this spot since the 14th century.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Home to three historic ships from the age of Vikings.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

It houses the remains of a 17th-century version of the Titanic.

Ancient burial grounds of the wealthy.

A nightly tradition fills the streets of Flogsta with a collective scream.

The second oldest anatomical theater is housed in a museum of curiosities.

An enthusiastically interactive mining museum that won't let black lung ruin the fun.

A 56-foot tall statue of the god of fire looks out over Birmingham, Alabama.

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

These pretty kitties killed and ate as many as 135 railway workers.

The palatial McDonald's that inspired Wesley Willis.

Home to a protest movement, a bombing, and a dramatic change in labor history.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.