A collection of 1,300 accordions of all shapes and sizes displayed in chronological order.

A hundred-year-old museum filled with giant physics toys and experiments designed by grad students.

A restaurant and lodge in northern Wisconsin which served as a clandestine hideout for John Dillinger and featured one of the most famous botched FBI raids in history.

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

An oddly poignant roadside attraction celebrating American folklore.

A remote hill on a stretch of country road where the laws of physics are defied... or so it seems.

Robots, lasers, and whoopee cushions, oh my!

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

One of the world’s largest living advertisements is made out of pine trees.

One man's goal to be surrounded by color resulted in this enchanting assortment of avian abodes.

Tombstones carved to look like tree trunks are used for multiple generations of family members.

One tree's homage to soles past and present.

The first artificial white water river course in North America cuts right through an Indiana city.

This museum collects over a century of automobile history including the iconic car from The Muppet Movie.

Modeled after the labyrinth in Chartres Cathedral, this small-town Indiana memorial labyrinth sits half a world away.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

This bridge uses an inverted bowstring truss and is believed to be the only of its kind in the United States.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

This unique collection collects pieces of art etched into thin pieces of stone.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

Where beautiful signs live on forever.

Now in disrepair, this 19th century station was a stop on of the famed B&O Railroad.

A memorial for an outsider theorist who believed that the planet is actually hollow.