The remains of a bustling turn-of-the-century park built to showcase the wonders of electricity.

Chilly air billows out from the entrance of an abandoned mine on a steep hillside, providing a refuge for Ice Age fauna and flora.

Former meatpacking facility turned vertical farm and sustainable business complex.

Internationally known record store and purveyor of "dusties."

An antiquated German apothecary on Chicago's North Side.

A lush green oasis in the middle of Chicago.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Less a museum than a bizarre fantasy world created by artists and engineers.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

Former hotel turned into haunted playground.

Five acres of divinely inspired folk art.

A theme park attraction designed to turn your children into LARPers.

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

This folk art compound was built by a fortune teller on the advice of three people from the future.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.