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

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

There's an exclusive Beefeaters pub hidden in the Tower of London.

An architectural oddity hides in plain sight on this iconic London bridge.

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

A discarded movie prop that was the original monolith for "2001: A Space Odyssey."

Metal horses galloping through a London fountain provide a link to the city's past.

It celebrates a very stinky task and salutes London's fatberg-vanquishing team.

This unassuming building produced some of the world's most famous bells.

Art under your feet honors the history of a working-class London neighborhood.

England's largest white horse isn't even white.

This memorial depicts the unlikely team that won England the Sir Thomas Lipton Trophy.

A Reformation-era fiery figurehead once denoted this location as a print shop.

The narrowest house in the U.K.

The United Kingdom's smallest working cathedral also serves as a quaint bed and breakfast.

This sandstone tree trunk is a relic from a long-past era when England had a more tropical climate.

Rare remnants of the brick-domed ovens birthed in the Durham coalfield during the Industrial Revolution.

These giant sculptures are supported by a bizarre menagerie of feet.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

The only statue ever crafted by award-winning animator Ray Harryhausen.

Home to one of the most popular teams in Scottish football history.

The largest terracotta fountain in the world, built to commemorate Britain’s Victorian achievements.

The Guinness Record holder as the "tallest cinema in the world" is a building with screens in almost every one of its 12 floors