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

Pagan monument converted to Christianity with the population.

Rainwater transformed this old quarry into a peaceful pond you won't find in most tourist books.

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

One of the world’s longest pedestrian suspension bridges.

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

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

Iron Age runes and ruins hide in plain sight along this Portuguese beach.

Europe's oldest still-operational tea farm also boasts a spectacular view.

A micronation on an islet along the coast of a Portuguese island.

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

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

A lush oasis full of vibrant plants and striking geometric displays.

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

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

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

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

A cluster of granite granaries perched on stilts.

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

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.

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

This now abandoned restaurant provides some of the most amazing views of Lisboa.

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