A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

One of Jeff Koons’s largest sculptures and his first commemorative work.

This emotive sculpture was originally created for the 1878 World's Fair.

The video game-themed street art first popped up in the French city.

Paris' linguistic guide to the international language of, yes, love.

A men’s restroom became a sandwich shop.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

The most photographed house in Maine looks good enough to eat.

The first bridge observation tower in the U.S. offers one of the best views of Maine.

This 19th century granite fortification is one of the most well preserved forts in New England.

This handsome giant is said to mark the birthplace of the mythical woodsman and even had a cameo in a Stephen King novel.

The eccentric mansion of one the most popular horror authors of modern times.

This parking garage was the site of what was - at the time - the largest cash robbery in history.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

Six times a day a train runs right through the middle of this Thai street market, sending vendors scrambling.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

This stunning concert hall has become a symbol of Iceland's national recovery.

Stunning wetlands ablaze with pink lotus flowers.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

This bridge was constructed from the rubble of the infamous Bastille.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.