This small piece of railroad history sits behind the parking lot of a chain grocery store.

The remnants of the base where US Army troops learned how to fight in extreme conditions.

One man's love for East Coast diner culture brought an entire eatery all the way from New Jersey to Colorado.

A roadside attraction filled with an astounding array of gloriously wacky vehicles.

A hotel with a rich Wild West history of miners and bootleggers.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

Neal Cassady may still have an open tab at one of Denver’s oldest watering holes.

The bronze uniforms commemorate the vital role of women during World War II.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

The Tudor-style cottage in the middle of the square is not quite what it seems.

More than a million titles fill the labyrinthine shelves of this prestigious private library.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

This London plaque marks the spot where David Bowie's famous alien made his debut.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

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