The final resting place of one of Thomas Jefferson's formerly enslaved sons.

The museum houses one of the world's largest collections of glass paperweights.

The remnants of this Douglas fir predate Columbus's arrival in North America.

Built in 1933, this unique ballroom is nicknamed the "floating dance floor."

Where experiments are conducted on all things wood.

Behind a modern brick exterior lies the oldest continuously-operating lunch-car diner in the United States.

Museum with an extensive collection of Cray supercomputers and related artifacts.

An unassuming house in Wisconsin hides a transient artist’s magnum opus.

A museum devoted to the victims and the survivors of the most catastrophic fire in American history.

The Bong-area park police have asked visitors to please, stop stealing the signs.

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

A largely forgotten and touching neoclassical marble fountain overlooking a bear mound effigy.

A 100-year-old chair with joints "cemented by nature."

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

Whimsical sculptures dot a woodland path surrounding their creator's old summer cottage.

This forgotten beach house built to look like a Frank Lloyd Wright masterpiece overlooks a hidden beach.

Before he was America’s most famous preservationist, John Muir was an ingenious mechanical inventor.

This solitary gravestone is separated from the rest in Appleton, explaining why local legends continue to surround it.

The birthplace of a titan of American cinema.

A roadside spring pooling in an old bathtub where anyone can stop and sip.

A forgotten Cold War relic hidden in the outskirts of a Wisconsin city.

An oddly poignant roadside attraction celebrating American folklore.

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

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.