One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

Sip cherry liqueur at a bar dating back to 1840.

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

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

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

In the Monastery of São Vicente resides a gallery devoted to a breathtaking collection of seashells.

One of the world’s longest pedestrian suspension bridges.

One of the largest Roman settlements in Portugal.

A perfectly circular lake is formed by the crater of an ancient underwater volcano.

This abandoned five-star hotel is now a five-star urban exploration destination.

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

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

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

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

The seventh largest spring in the world.

The largest spring in Northwest Arkansas is also home to a sprawling botanical gardens and a historically significant bluff.

This restaurant serves wood-fired fare served in a natural cave with a live spring.