This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

Founded as a refugee camp, now a popular tourist spot.

Single runway interrupted by a busy road that cuts across its middle.

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.

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

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

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

The "Little Ones," show Portugal in full miniature splendor.

One of the largest Roman settlements in Portugal.

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

A fortress off the West coast of Portugal that dates back to 1502.

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

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

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.

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

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

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

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

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

The world's oldest bookshop still in operation.

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