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

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

Portugal's National Pantheon has a history of curses, collapses and financial problems.

The corpse bride of Portugal.

Catering to broken dolls for almost 200 years, this repair shop is now a charnel house of doll parts.

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

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

This crumbling Portuguese ruin overlooks the populace it once ruled.

A perfectly circular lake is formed by the crater of an ancient underwater volcano.

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

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

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

Perhaps the most spectacular grotto along the Algarve coastline.

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

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

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

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

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

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.

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

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

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