Look up from the busy streets to discover how time is kept!

Catacombs turned marketplace.

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

A hands-off space for graffiti artists to hone and display their skills.

This open-air mosaic gallery honoring an English artist took hundreds of volunteers more than seven years to create.

A jumble of concrete on the corner of one of London’s terraced buildings is actually a work of art.

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

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.

The niches over the western entrance of Westminster Abbey honor individuals from the 20th century who gave their lives for their Christian beliefs.

Soon after its unveiling, this giant inverted globe sparked controversy and was vandalized.

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

A quiet memorial to those who died saving others in the heart of the City of London.

A recreation of a sign that Charles Dickens used to see on his walk home.

This 1920s Dutch barge is now a floating bookstore.

Visit the grave of a famous feminist author and the mother of Mary Shelley.

This massive blockhead sculpture hides an entire library.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This pair of statues commemorates a once-widespread carnival tradition of blowing on each other’s butts with bellows.

Guests can stay at a hotel in the former French abbey where lie the tombs of King Henry II and King Richard the Lionheart.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

A gruesome combat between a hunter and a furious momma bear.

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.