Hidden beneath the streets of London is a secret subway that only carried mail.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

This sculpture encompasses the emotion of rail travel.

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

This 1920s Dutch barge is now a floating bookstore.

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

An unassuming London park is actually a pilgrimage site for modern clowns.

This life-size monument honors the legacy of a famous literary feline.

A display of everyday life in the area that was unveiled during the 2012 Summer Olympics.

Taxidermied animals galore, by appointment only.

On this stunning Scottish island, you can walk in the footsteps of dinosaurs.

It's good luck to be mocked by this monkey.

The most loyal of little dogs, or a Victorian era publicity stunt?

Wallabies live naturally on this Irish island.

Meet the bronze beloved pet to a family of famous peeing statues.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

Henry VIII's forgotten castle was built by the gunpowder-obsessed king to be defended solely by cannons.

All unmarked mute swans on the Thames are owned by the Queen per a tradition that began in the 12th century.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

These docile dragons are ideal inhabitants for the conservatory greenhouses.

Abstract dinosaur models in London.

Some of the earliest leaders of the Moravian congregation are buried here.

The final resting place to 300 Victorian-era pets hides inside the city park.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.