Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

Wind power station for making famous Ketel One vodka.

This giant wire frame man sculpture is crouched in contemplation.

Amsterdam's former hotspot for public executions and dissections.

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This unattributed sculpture in Amsterdam is hiding in plain sight.

A beautifully eclectic mix of architectural styles.

The attic of a four-century-old canal house hides a clandestine church.

A curious collection dedicated to human and animal anatomy and pathology.

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

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

The site of Austria's biggest concentration camp now honors its victims.

Eastern Bloc nostalgia, anybody?

This historic black and white monastery is one of Bulgaria's architectural jewels.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

An abandoned resort in North Macedonia is a relic from the Communist Party of Yugoslavia.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

This conical hill was built as a testing ground for an engineer known as the Glider King.