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

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

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

A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

The defensive tower was built centuries ago to warn locals of Berber pirate attacks.

Single runway interrupted by a busy road that cuts across its middle.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

Red, white, and blue painted steps along with a Union Jack celebrate the outcome of Gibraltar's 1967 referendum.

The castle still holds traces of the abandoned Roman fort it was built atop.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

The painting on an aptly named street honors the 1980s slasher movie.

Britain's oldest miniature railway.

A rare wooden coffin set vertically into the Gothic arch of an ruined church.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

Once the last route taken by condemned prisoners.

The Liverpool street made famous by the Beatles is real.

The tower was originally used as a chimney for the waste incinerator of St. John's Precinct and Market.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

This bronze statue was dedicated to a 1966 Beatles hit.

This whimsical public art installation is a unique homage to Liverpool's industrial heritage.

This aging storage facility is the world's largest brick warehouse.

A hundred copies of Antony Gormley's naked body stare out across the water.

Much of what constituted mid-century Liverpool now litters a beach outside of town.

The second-longest pier in the U.K. stretches a whole kilometer into the Irish Sea.