There's an exclusive Beefeaters pub hidden in the Tower of London.

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

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

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

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

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

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

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Hear the quietest sound from across the dome.

One part local history, 99 parts gruesome haunted house.

This Japanese treats shop may have been the first business to mass-produce fortune cookies in the United States.

These WWII-era murals were initially booed as a libelous portrayal of the American dream but have survived multiple attempts to have them destroyed.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Tiki luxury on Nob Hill.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

The god of wine stares out at passersby on this busy Pittsburgh thoroughfare.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.