The oldest farmer's market in America is so ancient it was approved by the King of England.

An abandoned church gets a second life as a massive beer hall and event space.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

A bronze of the man in all his sinewy glory celebrates his longtime connection to the Ohio city.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

One of the oldest of its kind.

Famously misunderstood wonder of the ancient world

The quiet field that inspired one of the most famous songs of all time.

The Liverpool street made famous by the Beatles is real.

One of England's most famous churches hides a pair of little known architectural treasures.

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

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

An architectural oddity hides in plain sight on this iconic London bridge.

The taxidermied remains of a once-great parrot.

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

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

Scattered throughout London are ancient remnants of the city's former bounding wall.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

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

A giant toy jack made of numerous welded-together fire hydrants.