One of the largest tuna factories in the Mediterranean now serves as a museum honoring Sicily's history of bluefin tuna hunting.

This gorgeous space is England's largest independent library outside of London.

This sculpture commemorates a naturalist and an illustrator whose work was a forerunner to modern field guides.

Royal burial place of the kings of ancient Britain.

A museum and gardens with unusual plants and a history of progressive programming for the blind.

A museum pays tribute to the glass-making industry of Sunderland.

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

The western face was supposedly left clock-less to snub the Welsh.

65 million-year-old chalk outcroppings mark the end of the Jurassic Coast.

This medieval manor house was equipped with secret compartments for hiding priests.

An abandoned Yorkshire castle that is hidden in plain sight.

The church and nearby castle are all that remains of a medieval village, mysteriously abandoned.

This 11th-century Cistercian abbey was once seized by Henry VIII.

Eat fish and chips in a striking Neoclassical building that once hid a public lavatory.

This sculpture made up of 22 bulbous bronze figures reminds locals of massive Weeble Woobles.

Tourists to the mountaintop Sicilian town often overlook its ancient fortifications.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This whimsical fountain depicts a winged siren shooting water out of her nipples into the fires of Mount Vesuvius.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

This skeletal, unfinished Gothic church once housed a miraculous masterpiece by Raphael.

Leveled by an earthquake, this Italian village is now preserved as a massive concrete art project.

These ruins of a Phoenician sanctuary in Sicily have a dark history.

This entire town moved to a safe location after it was devastated by an earthquake, but the remains of the original town are still around.