Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

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

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Follow the original medieval paths that wind through this intriguing section of the city.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

This luxury shopping lane has been protected by its own tiny police force for over a century.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

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

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

The largest greenhouse in the world is home to over one million types of plants.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

Giant, friendly pelicans in Central London, the most unlikely of places.

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

Abstract dinosaur models in London.

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

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

The remains of Crystal Palace Great Exhibition of 1851.

London's smallest police station is barely the size of a phone booth.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

Hear the quietest sound from across the dome.

An unusual round church in London with a Templar past.

Catacombs turned marketplace.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.