One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A hidden three-foot-wide house separates these two regal churches.

A small but charming botanical garden that contains many exotic plant species.

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

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

Outside of one of Britain's most renowned social clubs, a step installed specifically for the Duke.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

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

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

One of America's founding fathers lived in this London lodging between 1757 and 1775.

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

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

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

The broken skateboards that became a poignant memorial to a murdered skater.

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

One part local history, 99 parts gruesome haunted house.

Giant, friendly pelicans in Central London, the most unlikely of places.

This townhouse was once the original home of the Scottish Football Association.

Inscribed on the gate are the names of 29 figures from the University's first five centuries.

These ruins have been linked to a sherbet factory that exploded, but the story may be entirely fictional.

The abandoned transportation hub hides within the Glasgow attraction it once served.

A local tree surgeon has created a whimsical walk full of carved tree stumps near Scotland's Loch Lomond.

Largest lake in Great Britain measured by surface area.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.