An unusual round church in London with a Templar past.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

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

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

The Tudor-style cottage in the middle of the square is not quite what it seems.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

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

One part local history, 99 parts gruesome haunted house.

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

Colorful murals by Jean Cocteau hide within this peaceful London sanctuary.

The medieval woodcut-style artwork chronicles life in medieval London.

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

A statue of the original Pearly King is hidden in a church's crypt.

This coffee shop lies hidden beneath a historic church.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

This South London cemetery holds the remains of more than 15,000 people.

Banksy gives themself artistic license with this piece of London street art.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

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

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.