Complex aquaponics systems allow fish and plants to grow in harmony.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

This pebble beach is so beautiful that taking its rocks is against the law.

One extremely determined man's homemade universe.

Almost half-way between the Equator and North Pole.

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

Eighteen miniature death-scene dioramas.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

This shop for all your super spy needs hides an educational secret.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

An enormous park-like oasis, full of famous Chicagoans' graves.

A strange and haunting monument of unknown origin in the historic Graceland Cemetery.

Shop of curiosities with a dinosaur museum tucked in its basement.

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

The subtle science of a master molecular gastronomist.

A monument to the art of slicing people open.

The world's only known button museum.

A science teacher's dream.

Former meatpacking facility turned vertical farm and sustainable business complex.

Grotto replete with mystical designs laid out in glued shell mosaics.