The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

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

The broken skateboards that became a poignant memorial to a murdered skater.

Hear the quietest sound from across the dome.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Preserved "bog person" that is over 2,000 years old.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

One of Hollywood’s favorite government buildings.

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

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

Italian cave with exceptional acoustics and an unsavory history.

A private collection of massive steel monsters guarding a Texas pipe works.

Eighty million natural history specimens call this gargantuan museum home.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

A newspaper building that made radio history.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Ample proof that watery ends make for well-preserved, millenia-old mummies.

Once one of the largest producers of pig iron in the world.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

Come for the speed, leave in love with the desert.

A decaying concrete oil tanker served as a disposal location for bootleg hootch.

The oldest working mechanical clock in the world.

Murals of the wild parties once held on the frozen River Thames.