The history and future of cannabis.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

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

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

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

Museum preserving torture methods from the past.

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

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

A geological bull's-eye visible from outer space.

Five ancient libraries, little changed for centuries, preserve a medieval archive of Quranic lore and civic documents

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

Part museum, part piece of Arthurian-inspired history, this stately hall attracts King Arthur fans from miles away.

A fantastic castle rumored to be the birthplace of King Arthur.

This medieval manor house was hastily fortified when it found itself in the middle of the Scottish fight for independence.

This temple was constructed entirely by Roman soldiers.

Legend has it that seven Anglo-Saxon kings were coronated on this stone, located in the appropriately-named town of Kingston.

This Tudor-era castle was once part of King Henry VIII's plan to protect England from invasion.

One of the oldest seagoing boats in the world can be found at the Dover Museum.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

The oldest-known example of a historic architectural style recognized by UNESCO.