This impressive rupestrian engraving dates back to the Upper Palaeolithic period.

An ancient tomb that still stands in Portugal.

A neolithic tomb converted into a tiny chapel.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

You can cross from one country to another in a single hop on this little bridge.

An honorary saint of the people, Maria Adelaide became an incorrupt corpse, the clothes intact, exhaling “a strong scent of roses.”

One of the largest Roman settlements in Portugal.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

This star-shaped military outpost is now simply trying to protect itself from neglect.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

This abandoned five-star hotel is now a five-star urban exploration destination.

Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

Picturesque intersection of witchcraft and ancient Christianity.

A unique seaside cave where Aleister Crowley faked his own death.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Houses are tucked between, on, and underneath giant boulders.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An abandoned mine now resembles a post-apocalyptic landscape of derelict buildings and blood-red pools of water.