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

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

A garden in Lisbon filled with giant porcelain creatures.

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

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

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

Picturesque intersection of witchcraft and ancient Christianity.

The stunning interior of this Gothic church is covered in ornate gold details.

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

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

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

This small chapel is built of human bones and decorated with a golden skeleton.

A submerged village appears when dam levels drop.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

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

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

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.

The abandoned remains of this once-thriving hotel looms over the city, awaiting an uncertain future.

The Natural History Museum that time forgot.

Known as the Hintz House, this medieval pharmacy has been an apothecary's haven for nearly 450 years.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

A preserved stretch of ancient fossilized trees with an impressive gem collection to boot.