Formerly known as Saville Theatre, this mid-20th-century entertainment hub includes an ornate frieze.

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

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

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.

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.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

A six-ton wedding present for the King of the Scots.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

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

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

In 1990, this 37-foot red steel bottle sailed from New York to England.

A mysterious shape catches the eye in this 16th-century painting.

Locals call it the "Give Peas a Chance" bridge because of its distinct graffiti.

In 2013, historians discovered a hidden room devoted to the art of making royals' hot chocolate.

The world's largest grapevine has produced a delicious harvest at Hampton Court Palace for almost 250 years.

The pockmarks across the building's facade are remnants of the Blitz.

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

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

This one has sailed five times as far as Sir Francis Drake's famous ship.

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

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

This luxury shopping lane has been protected by its own tiny police force for over a century.