This expansive bridge in the Canadian wilderness was originally just built for friends.

The fairy tale castle of the "fairy-tale king."

The prototype for all Nazi concentration camps.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

340-foot statue built to honour the Heroes of the Soviet Union.

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

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

World War II bunker still standing on the New Jersey beach.

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

This tiny square mile of Canadian sand was once considered the world's smallest desert.

Upside-down trees serve as natural flower pots in this hanging garden of Alaska.

The king of U.S. high points towers over every other peak on the continent.

This giant temperature attraction created some giant electric bills.

This replica of the Greek structure is in the heart of Nashville.

This historic train station has been converted to a locomotive themed hotel.

A bizarre house filled with an astounding array of collections.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A museum devoted entirely to the rattlesnakes and snake-related art.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This blowhole is supposedly caused by a trapped monster.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.