The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

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

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

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

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

The beloved fantasy novelist is buried near a church containing a whimsical etched glass window full of Narnia favorites.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

The last four extravagant street signs of London's historic banking street.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

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

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

One of Europe's oldest libraries.

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."

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

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

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

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

A museum wholly devoted to juvenescence.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

The granddaddy of English geoglyphs dates back to the late Bronze Age.