A large circus museum with summer performances.

This softly rounded mansion was built without corners not to avoid evil spirits, but to make them more comfortable.

According to the legend, this strikingly beautiful hill has miraculous healing powers.

The remains of a enormous earthen figure of unknown origins cuts across a rural Wisconsin road.

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

This whimsical sculpture garden is a local treasure.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

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

This cave holds a surprisingly colorful variety of geological oddities.

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

More than 5,000 contemporary and "historic" mustards from around the world.

This deceivingly ordinary warehouse hides an enormous collection of pop culture treasures.

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

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

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

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

This supper-club-turned-concert-venue still serves drinks at its original rotating bar.

The arboretum whose marshy soil sucked up the dreams of housing developers.

A bronze plaque marks the site of the only show the "King of the Soul Singers" ever missed.

The tunnel that runs beneath this former inn was once a hiding place for enslaved people seeking freedom.

Once known as the Illinois Asylum for the Incurable Insane.

An unlikely Transcendental Meditation haven in the American Heartland built around the ancient Vedic principles of balance and harmony.

The city of Rockford, Illinois is symbolically protected by a quartet of fittingly stony sentinels.

Home with Gothic windows featured in a famous painting.