This modest relic, with rich history as a strategic fort through multiple eras.

Pivotal in the research of early British Bronze Age life, found near Stonehenge.

The oldest working mechanical clock in the world.

The first Chinese student to graduate from a European university.

One of Singapore’s few remaining building with a WWII air raid shelter.

Legend holds that a tortoise turned itself into this island to save two shipwrecked sailors.

The medieval legend behind this holy well was one of the inspirations behind "Alice's Adventures in Wonderland."

This unassuming shed was the stage for a monumental event in British history.

Protecting the dead from opportunistic body snatchers.

The oldest church in Inverness witnessed the brutal executions of many Scottish soldiers.

Inside Cork's Kent station stands its country's longest-serving postbox.

A serene public space nestled within the remains of Glasgow’s Victorian maternity hospital

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

A 200-year-old collection of oddities and medical paraphernalia.

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

The red letters in the literary pavement leading to the library form a mysterious code.

Artists and musicians now rule over this former rail station.

A hands-off space for graffiti artists to hone and display their skills.

A tongue-in-cheek arcade where the games are based on everyday life.

Named after one of Canada's greatest writers who lived out her days in this quaint neighborhood.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

The first project by the Bureau of Reclamation illustrates both the upsides and downsides of reclamation.

The only United States mine for magnesium carbonate has been operating continuously since the 1930s.

The most magnificent bottle house in a town strangely full of them.