Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

An unusual round church in London with a Templar past.

A mysterious shape catches the eye in this 16th-century painting.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

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

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.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

A naturally mummified 2,000-year-old man.

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

A memorial for public executions that dates back to the 14th century.

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

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

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

This ancient Egyptian obelisk still bears the wounds of World War I.

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

A mysterious suspended hand greets unsuspecting visitors at the Tower of London.

The final resting place of the most famous outlaw in the Old West.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

The final resting place of New Orleans' most famous voodoo priestess.

This creepy, yet oddly beautiful cemetery is home to one of the founding fathers of Lake Charles.