The effect of this ancient form of image projection situated atop an 11th century Moorish palace is thrilling.

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

A 16th-century Andalusian palace.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

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

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

There aren't too many operational funiculars around, but Pittsburgh has two!

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

A wonderful and easily overlooked museum tucked in Ohio's Burke Lakefront Airport.

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

This massive airship factory is so large that it has its own indoor weather.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Landmark dedicated to the plight of the American Indian in the 21st century.

The only presidential monument to display a late POTUS's actual casket.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.