A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

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.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

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

Two plaques commemorate the site of Shakespeare's first theatre.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Famously misunderstood wonder of the ancient world

This Czar-funded, onion-domed, lavishly muraled Orthodox Church played a starring role in "The Deer Hunter."

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

St. Augustine's record-setting narrow street was designed to protect against pirates.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

This replica of the Greek structure is in the heart of Nashville.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

This 13-foot smiling peanut in Georgia helped Jimmy Carter win the 1976 presidential election.

The whimsical construction on the roof has given rise to many a Montgomery myth about its contents.

This space rock fragment is one of the only meteors to have ever struck a human.

A natural history museum with an extensive collection of bird dioramas.

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