This enormous censer uses a pulley system installed over 400 years ago.

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

Thanks to an acoustic anomaly, this unassuming stone bench has heard one hundred years of secrets.

These narrow stone granaries have been used to store and dry out grain for hundreds of years.

A cluster of granite granaries perched on stilts.

A replica of the Roman emperor in glorious full color.

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.

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

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

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

The history of drinking is told through 1,800 cups, chalices, and glasses at this exhibit.

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

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

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

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

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

When this former hospital pharmacy closed in 2013 it already looked like a museum, so they turned it into one.

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

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

The stunning interior of this Gothic church is covered in ornate gold details.

Once used to calculate the various levels around the country.

To enter this cluttered-yet-cozy sanctum of Belgian brews, ring the bell and tell the gatekeepers you've come “to taste beer.”

This interactive sculpture allows visitors to leave a message in case a friend passes by.