An abandoned tuberculosis hospital said to be haunted by the patients who died within its walls.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

This giant sculpture made of trash is a critique of society's wastefulness.

A windswept necropolis carved into the rocks overlooks the "most Portuguese town in Portugal."

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

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

Dead weights honor the dead of Portugal's fishing industry.

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

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

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

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

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

A submerged village appears when dam levels drop.

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

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

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

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

A Belle Epoque bordello turned into a themed love hotel.

Dolls of all shapes and sizes display the eras of femininity in this spooky and beautiful collection.

The tomb of a hard traveling saint is constantly covered in shoes as offerings to heal disabled youth.