This mural changes every few years.

In 1952, this restaurant began selling the Colonel's “secret” recipe.

An early 20th-century bullring converted into a modern shopping center.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

The final resting place of the great navigator, or maybe his brother.

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

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

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

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

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

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

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

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

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

Eat the ultimate iteration of Portugal's most beloved pastry.

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

The best place in the world to buy tinned fish.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

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

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The world's oldest bookshop still in operation.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

The vast, legendary catacombs hold secrets much stranger than stacked bones.