Indents in the pavement are all that remain from a grisly death machine in Paris.

A subterranean shelter remains intact under a busy Paris railway station.

1920's reinforced concrete church by architect Auguste Perret changes the face of modern design.

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

London's only public statue of the much-married monarch adorns the gate to St Bartholomew’s Hospital.

A plaque marks the underground site of one of London's "lost rivers."

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

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

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

A memorial to a dog that inspired rioting in the streets of London.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

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

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

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

Eighty million natural history specimens call this gargantuan museum home.

Hear the quietest sound from across the dome.

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

One part local history, 99 parts gruesome haunted house.

See just what life was like in a 19th-century prospecting town.

A former gold rush boomtown has managed to stay in business for over 100 ramshackle years.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.