This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

London's smallest police station is barely the size of a phone booth.

Hear the quietest sound from across the dome.

An unusual round church in London with a Templar past.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

This private residence was the template for one of the most beloved television homes of all time.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

This stone complex marks the urban center of a lost civilization.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

The mark of the Devil's horns on a marble column in Milan.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

A museum marks and documents the site of the Titanic's launch.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The modern birthplace of Irish freedom.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

One of Ireland's most infamous prisons for rebels including men, women and children.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A local prank turned town icon.