This building contains a door only used by members of the royal family.

A legend says that if this elaborately decorated glass breaks, the good fortune of its owner's household will also disappear.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

A gruesome and mysterious ancient sculpture of a pagan deity from the Roman occupation of Celtic Britain.

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

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

More than a million titles fill the labyrinthine shelves of this prestigious private library.

This psychedelic tourist trap is a leisurely descent into madness.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

A clock designed to run with perfect accuracy for 10,000 years.

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