World's first "penitentiary," meant to be humane, drove men insane.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

This punny mirror of another Wisconsin attraction is exactly what it sounds like.

One of Frank Lloyd Wright's final works was this UFO church.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

"Iron Age" creatures fill this huckster's rusted metal sculpture garden.

A place to eat for on-the-run agents and espionage enthusiasts.

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

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

Robots, lasers, and whoopee cushions, oh my!

Vikings and Evangelicals have both had a hand in this replica medieval church.

This cave holds a surprisingly colorful variety of geological oddities.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

A number of gruesome unsolved murders have turned this simple home into a morbid tourist trap.

This statue of Olympic hockey coach Herb Brooks immortalizes one of the greatest moments in American sports history.

Where the notorious gang lived while on the run from the FBI.

A giant granite cross remembers missionary Father Frederic Baraga, and his safe passage across an angry Lake Superior.

A collection of pianos and more guaranteed to delight anyone interested in music history.

For over a century, it was a crucial center of mental health treatment and also the source of many local legends.

This Minnesota town celebrated the state's 100-year anniversary by creating a massive ode to nature's smartest bird.

The home where a lovestruck Fitzgerald wrote his first published novel, "This Side of Paradise."

The literary king of the Jazz Age was born in this lovely Minnesota home which still honors his legacy.