This vast collection of smoking pipes from across the world spans centuries.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

This unattributed sculpture in Amsterdam is hiding in plain sight.

This plaque marks the former home of one of the first women physicians in the Netherlands.

A set of seven houses, each built in a style that represents a European country.

Pop culture has helped to keep this iconic British building from being destroyed.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

This colorful statue welcomes visitors to a Barcelona park.

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

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

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

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

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

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

Perhaps the only prehistoric monument with its very own public bus stop.

A open air theatre built on a cliff by an eccentric British woman.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

This 135-year-old weather station studied the effects of the climate on human health.

At just 25 inches at its narrowest point, it's one of the tightest streets in the world.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

A medieval quay that was the Mayflower's final port of call before sailing for America.

A replica of the steam engine that hauled Queen Victoria's Royal Train is on display at Windsor.

At just 51 feet and 10 inches long, it's the shortest street in England.