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

This castle has links to Portugal’s founding and struggles for independence.

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

The corpse bride of Portugal.

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

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

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

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

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

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

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

Come for the fried chicken, stay for the history at Oklahoma's oldest bar.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

The surprising home of the iconic Santa Monica Pier Ferris Wheel.

No matter what the plaque under this massive legume says, this is not the world's largest peanut.

Standing at 21-feet tall, this space cowboy adds to the legacy of Route 66's muffler men.

Religious perseverance and cultural coexistence manifest in an architectural gem that multiple wars couldn't topple.

This dazzling Art Nouveau mansion is now home to the Modern Art Gallery Subotica.

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

A monument dedicated to a local softball team full of clowns.

This giant pocket watch is the third iteration of a local landmark that has been standing just off the Santa Fe Plaza for over 100 years.

Once a dining hall for boarding school students, this lodge was a popular haunt for nuclear physicists working on the Manhattan Project.

This sculpture perfectly models the molecular structure of a drug that was never produced.

The oldest continuously occupied public building in the United States.