This tower once served as a radar station during the Cold War.

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

Nestled in the mountains of Portugal is a tiny village made almost entirely of schist.

Come for the bread-themed puppet show, stay for the buffet.

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

These rock drawings in the Côa Valley also create an ancient optical illusion.

Once a thriving textile powerhouse, now a relic of what once was.

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

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

A replica of the Roman emperor in glorious full color.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

Dedicated to one of the author's most iconic works.

An icon of the city, this chapel features an amazing dome ceiling and offers panoramic views.

This museum is home to one of the biggest collections of printing press technology—plus a river view.

Picturesque intersection of witchcraft and ancient Christianity.

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

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

A scientific observatory managed the largest Portuguese astronomy research unit.

This historic streetcar system has been running since the 19th-century.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

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

Elaborate tile work in this railway station tells the story of Portugal.

This Bordeaux parking garage has 712 indoor spaces, and one outdoor.

The world's largest reflecting pool is just two centimeters deep.