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

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

An unassuming music museum recounts the rags to riches story of a dramatic Portuguese genre.

This architectural beauty is the home to a personal collection of more than 600 examples of mechanical musical instruments.

This museum contains a vast array of puppets and marionettes from all over the world, featuring incredible works by Portuguese creators.

A windswept necropolis carved into the rocks overlooks the "most Portuguese town in Portugal."

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

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

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

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

Picturesque intersection of witchcraft and ancient Christianity.

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

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

Perhaps the most spectacular grotto along the Algarve coastline.

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

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

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

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Nicknamed the 'Chestergate Hotel,' the underground tunnel had beds, lights, and even flushing toilets.

A wooden statue of a mermaid commemorates one fisherman's generosity.

This Welsh dockyard was the site of the not-so-secret construction of the Millennium Falcon for the original Star Wars trilogy.

The ruins of this magnificent Scottish castle blend both Gothic and Renaissance architectural styles.

A series of stained glass artworks that depict images of the hit TV show.

One of the first canal boat-lift inclines ever created.