The world's oldest bookshop still in operation.

You can cross from one country to another in a single hop on this little bridge.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

This fairy-tale, neo-Gothic church in the Azores is a world of magical realism.

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

The medieval town's star-shaped walls are geometrically dazzling, though not entirely impenetrable.

Europe's largest collection of matchbox designs is a fascinating exploration of the cultural history of the world.

Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

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

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

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

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

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

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

This charming candle shop has been in business since 1789.

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

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

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

This little-known national museum houses over 40,000 works of art from across the world.

A naturally occurring amphitheater carved by erosion into the mountainside.

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

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

Entire apothecaries are on display at this Lisbon museum, which explores the history of medicine.