One of the most important yet well-hidden museums dedicated to the history of medicine.

The Pope’s secret escape route.

Italian horror legend Dario Argento’s own shop hides a sinister museum-dungeon in the basement.

Since 1999, this gelateria founded by a string instrument maker has been turning out some of Rome’s best scoops.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Breathtaking and huge 430 year old maps of Italy.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

These spartan apartments are provided to clergymen visiting Vatican City.

In the Netherlands, one of the world's largest private car collections can be found.

A unique work of automotive art calls this shopping center home.

Museum preserving torture methods from the past.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Above the heads of passersby stands a small statue commemorating soldiers from the Boer War.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

In 1988, jazz legend Chet Baker fell to his death from a window of this hotel facing Amsterdam Centraal.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

The spectacular history of spectacles on display.

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

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

Europe's official "zero-level," the equator of elevation.

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

Widely advertised as Amsterdam’s narrowest street, this passage was once a highlight of the Red Light District before its windows closed.

Amsterdam's Red Light District leaves little to the imagination.