More than 25 fully functional scale replicas of famous lighthouses dot the shores of Lake Havasu.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

This Las Vegas casino boasts one of only three spiral escalators in the United States—an engineering wonder.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

The mysterious round rocks of Schooner Gulch.

Frank Lloyd Wright died a year before construction on his largest public project even began.

Centuries of biking history are nestled in the shadow of the birthplace of contemporary mountain biking.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

This lighthouse has been guiding shipping into the Golden Gate since before the American Civil War.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

This one-of-its-kind shipyard brings the 12th-century Viking Age back to life.

A statue that would be at home in Rome can instead be found in the heart of Norway's oldest city.

Home to three historic ships from the age of Vikings.

This handsomely carved wooden church is more than 800 years old.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Copenhagen's celebrated theme park and gardens.

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

Nordic giants resurrected from the sea and restored to their former greatness.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.