Ancient petroglyphs discovered only after a massive fire swept across Michigan in the 1880s.

The statues honor the state transportation employees who've died while performing their work-related duties.

This was once the largest four-sided clock in the world (yes, even bigger than Big Ben).

Built in France in the 1400s, this gothic chapel now resides at Marquette University in Milwaukee, Wisconsin.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

The Lone Star plaque hangs in a bombed-out bunker in Normandy to honor a Texan colonel's heroic actions on D-Day.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

The sculpture of the deceased cockatoo flops atop its personal plinth.

This life-size monument honors the legacy of a famous literary feline.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

The Tudor-style cottage in the middle of the square is not quite what it seems.

This historical swimming pool near Miami is emptied and refilled each day with naturally filtered water.

Where animatronic singing fish go to retire.

Legend says Dungeons and Dragons players can get their dice blessed at the creator of the game's memorial.

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A true roadside icon standing on the same plains that the herds once roamed.

At a rest stop north of Seattle, the trunk of an ancient tree.

Thomas Dambo's troll sculpture wears a crown with birdhouses on his head.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

This playground sculpture of an icon from the past is dedicated to the children of the future.

The decorations were inspired by an unlikely missing treasure.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.