This decaying complex from the early 1900s was once the site of massive iron and fluorite mines.

A prehistoric route that has claimed many victims is now closed to traffic.

A stately castle in the northern Italian countryside has been restored after years of neglect.

An abandoned piece of phallic art repurposed by locals into a makeshift fertility shrine.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

The glowing blue Nymphaeum of Emperor Tiberius.

A narrow opening between the mountains of the Amalfi Coast creates a scenic hidden beach.

Dim sum, served in a grand old theater.

A tiny, heartwarming piece of art hiding in plain sight.

This tiny watering hole claims to have the smallest bar counter in Europe.

A father's love for his son has weathered the test of time in this whimsical garden of outsider art.

A faded reminder of what was once a common sight in London during the Blitz.

Try not to get lost in this picturesque Brazilian labyrinth of the dead.

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

The largest library in Latin America owes its existence to an Old World earthquake and a Napoleonic invasion.

Come for the oysters, stay for the priceless art honoring inventors across history and Scotland's favorite outdoor sports.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

This hidden green space is the city's second largest conservatory.

This coffee shop lies hidden beneath a historic church.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

The world's oldest family-run magic shop is hidden beneath a bustling London thoroughfare.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.