Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

A unique botanical garden housed in three giant geodesic domes.

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

This striking art museum holds an amazing series of curiosity cabinets.

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

Triangular House built on a leafy residential street in St. Paul.

An underappreciated sculpture garden just a few blocks from the capitol building.

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

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

Home with Gothic windows featured in a famous painting.

An eatery within the Minneapolis American Indian Center writes colonial ingredients out of the story of Native American cuisine.

A 115-year-old restored German dining hall awaits those who venture beneath the Minnesota State Capitol.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

The author of Uncle Tom's Cabin was neighbors with Mark Twain while living in this Connecticut home.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

A wunderkammer hidden on the top floor of the Hartford statehouse.

The intriguing personal collection of a professional demon-chaser.

Hundreds of skulls and bones at the largest skeleton museum in the country.

Human skulls and a stuffed goat made into a rocking chair can be found at this strange little store.

A former department store turned into a quirky restaurant.

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

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

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