This Luxembourg cave is covered in cryptic looking marks left by mining activity.

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

Enter this small nook and you'll be surrounded by 360 degrees of street art.

This alley off Edinburgh's Royal Mile contains remnants of the city's seedier history.

This Arcadian garden in the Pentland Hills boasts over 270 artworks by Scottish artist and poet, Ian Hamilton Finlay.

The 16th-century church has the only stained glass windows that survived the Scottish Reformation intact.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

A small square plaque marks a failed assassination attempt that could have changed history.

Each year this small English village becomes overrun with outlandish straw men.

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

A midnight snack that lights up the night.

A memorial to a dog that inspired rioting in the streets of London.

This crumbling folly looks like an enchanted left over from Middle Earth.