Comprised of Spanish war cannons, this sculpture once graced the bow of a WWI warship.

A wonderfully curated used bookstore in an airport.

A museum celebrating the self-taught artist-environment builder.

A bypass decorated with large wooden troll carvings.

A unique botanical garden housed in three giant geodesic domes.

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

One of Frank Lloyd Wright's final works was this UFO church.

More than 5,000 contemporary and "historic" mustards from around the world.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

A place to eat for on-the-run agents and espionage enthusiasts.

This striking art museum holds an amazing series of curiosity cabinets.

Wisconsin's most celebrated export gets the royal treatment on I-94.

Robots, lasers, and whoopee cushions, oh my!

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

On this romantic tidal island reachable only at low tide the tomb of a famous French writer overlooks the sea.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

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

World's most expensive home.

Many Hindus make the long pilgrimage to this holy city to have their remains burned on the banks of the Ganges River.