A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

An architect's childhood fantasy treehouse made real.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

An artistic tribute to the famous singer, just around the corner from where he was born.

Scattered throughout London are ancient remnants of the city's former bounding wall.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

This free, take-a-book shop seems like a trick but isn't.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

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

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

The Boston square dedicated to the dark poet who was born nearby.

This whimsical park encourages its visitors and wildlife to roam on and around the various works of art.

Home to New Mexico's longest bar, this watering hole also has a mining museum and a haunted history.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

More than 21,000 images fill this overlooked gem of a prehistoric site.