The niches over the western entrance of Westminster Abbey honor individuals from the 20th century who gave their lives for their Christian beliefs.

The arching stretch of London's longest street holds many reminders of the area's maritime past.

A secluded green oasis amidst the towering skyscrapers, bears an unusual moniker that reflects one of the city's oldest guilds.

One of America's founding fathers lived in this London lodging between 1757 and 1775.

This notorious dive has been serving up both kinds of spirits since 1879.

A bronze bust commemorates the heroism of the secret agents who led covert operations against the Nazis.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

An architectural oddity hides in plain sight on this iconic London bridge.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

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

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

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

It holds a fabulously designed tribute to astronomer Edmond Halley.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

At almost 1,000 years old, this is the oldest known door in all of Britain.

Ruins from the Parthenon and petrified wood line the interior of one of the world's most famous monuments.

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

It may be a historic 17th-century coaching inn, but the George Inn still functions like a modern pub.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

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

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.