One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

Tucked away inside this concrete building is a church and its grand display of brutalist architecture.

A small but charming botanical garden that contains many exotic plant species.

One man's remarkable private collection of art from around the world.

This castle has links to Portugal’s founding and struggles for independence.

The "Little Ones," show Portugal in full miniature splendor.

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

Building owners can take out tiles for free at this repository for historic building materials.

The best place in the world to buy tinned fish.

The medieval town's star-shaped walls are geometrically dazzling, though not entirely impenetrable.

Pagan monument converted to Christianity with the population.

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

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

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

One of the smallest bookstores on the planet.

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

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

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

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

One of the largest Roman settlements in Portugal.

The corpse bride of Portugal.

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