The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

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

A diorama of the Civil War, fought by cats.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Steepest flood safety railway in the entire world.

Memorializing an American tragedy of massive proportions.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

World's first "penitentiary," meant to be humane, drove men insane.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

A museum dedicated to the alleged Roswell Incident.

Mysterious meeting place for UFO hunters near Area 51.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

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

The "Prussian Versailles" that is as glorious today as when it was built.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

The mystic whose incorrupt corpse still attracts the faithful.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

The yawning maw of this pagan visage is said to bite off the hands of liars.

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.

A colorful public mural in San Antonio's West Side encourages students to stay in school.