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

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

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

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

A majestic hotel for dreamers rises from the center of a fairytale wood.

A cluster of granite granaries perched on stilts.

One of the largest Roman settlements in Portugal.

The corpse bride of Portugal.

Ancient catacombs form the foundation for this Rococo orgy of a church.

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

A hidden three-foot-wide house separates these two regal churches.

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

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

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

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

This fairy-tale, neo-Gothic church in the Azores is a world of magical realism.

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

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

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

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

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