135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

The best place in the world to buy tinned fish.

A museum dedicated to one of Portugal's most celebrated writers.

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

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

Ghostly ship drawings grace the walls of this medieval hospital.

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

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

A unique seaside cave where Aleister Crowley faked his own death.

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

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

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

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

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

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

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

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.

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

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