Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

This medieval city gate is now a blend of the past and the modern world.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

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

The footprint of a frustrated devil in Munich's Cathedral.

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

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

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.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

Poet Antonio Machado's former residence offers the quintessential Castilian lifestyle of the provincial towns in the early 20th century.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

A controversial art piece that harkens back to local folklore.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

Known as "Toronto's Flatiron."

This whimsical fountain pays tribute to Toronto's four-legged friends.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A pocket of Buenos Aires with an unusually high concentration of psychotherapists.