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

The history and future of cannabis.

A floating cat sanctuary on an Amsterdam canal.

Cat art as far as the eye can see.

Museum preserving torture methods from the past.

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

The world's only museum devoted to the wonders of fluorescence.

This classic restaurant features a gorgeous mirror-clad room.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A museum dedicated to a Cold War era sausage.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

A fairytale island floats in the middle of Italy's little-known Lake Orta.

The 43-mile route crosses through six islands with gorgeous views of the Seto Inland Sea.

Happy harbor seals frolic and snooze on this warm, sandy stretch of coast.

This tiny hotel perched atop a 50-foot tower really puts things into perspective.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

Some of the saint's blood and bones are said to reside in Dublin.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.