Mary Kelly was last seen here before she was murdered by Jack the Ripper.

Pop culture has helped to keep this iconic British building from being destroyed.

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

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

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

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

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

The world's largest anatomically accurate brain sculpture.

Twin Peaks' real life Double R Diner has been restored to its damn fine television look.

This working class sculpture pounds his hammer all the livelong day.

This former coal gasification plant found a curious second life as a popular public park.

A museum dedicated to the history and exploration of both popular music and science fiction.

A wall of chewing gum moonlights as collective art.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

A giant Troll lurks under one of Seattle's oldest bridges.

Theater has had many different incarnations but has survived the ravages of time.

Internationally known record store and purveyor of "dusties."

A Bibliophile's Dream.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A hands-off space for graffiti artists to hone and display their skills.