When this former hospital pharmacy closed in 2013 it already looked like a museum, so they turned it into one.

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

Building owners can take out tiles for free at this repository for historic building materials.

Elaborate tile work in this railway station tells the story of Portugal.

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

This Roman archeological site is hidden amid a 1930s housing estate.

A famous pilgrimage site that remains hidden in the midst of a city.

The world's oldest railway bridge in continuous use.

A piece of public art commemorating the world's first Black professional footballer.

This bridge once allowed Dere Street to cross the River Tees.

A locomotive made from 185,000 bricks celebrates the town's pioneering railway history.

This tiny business claims to be "the smallest pub on the planet."

The first privately owned air raid shelter in Britain, built after a horrifying night of Zeppelin bombings.

Despite its ornamental looks, this towering Tuscan-inspired anomaly was a masterpiece in hydraulic engineering.

These ruins of a medieval church are full of architectural mysteries.

Isaac Newton's former home, where the famous apple tree still stands.

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

This World War II airfield is the last place the bandleader performed before he disappeared.

The intended purpose of this unfinished Elizabethan building remains a mystery.

This sculpture depicting the history of Maryport turns into a light show at night.

The second smallest castle keep in England.

This unique sculptural clock transforms into a periscope every hour.

The largest municipal cemetery in the United Kingdom and the second largest in Europe contains some of Manchester’s biggest characters.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.