The facade of this bank has changed little over the centuries, including its unique welcome sign.

The former headquarters of history's oldest megacorporation.

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

This pirate-broadcasting-tower-turned-restaurant played a rebellious role in the history of Dutch television.

This museum inside Amsterdam's largest cemetery explores how people deal with death.

This unattributed sculpture in Amsterdam is hiding in plain sight.

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

The history and future of cannabis.

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

A massive marble foot is tucked away in a small alley near the Pantheon.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

This ornate church has survived Nazi and Soviet occupation, including a short stint as a Soviet-era gymnasium and cinema.

This impressively complicated radioastronomy research center was once a tool of Soviet spies.

A preserved oak tree about 3,500 years old found in Riga, Latvia.

Spend the night in 1920s Latvia in this historic recreation and movie set.

The pyramid and dome deep inside the Dzūkija forest are believed to channel divine energy.

You would never guess that before World War II this lonely field was a bustling German city.