Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

A fearsome dragon clings to a corner of Munich's city hall.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A stairway to heaven, or to nowhere at all.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

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

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

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.

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

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.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

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

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

Along a coast that sees the annual migration of humpback whales, a geological formation that takes the shape of a whale’s tail.

Inside this Krakow church, an explosion of psychedelic color.

Remnants from a time before electricity.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Legend says this sacred tree was a gift from goddess Athena.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A marvel of Byzantine engineering under the streets of Istanbul.