This lakefront cottage was crafted in the 1800s and was once a sanitorium.

A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

A fairytale art house in the middle of Wisconsin.

Paranormal activity on the great lakes.

The oldest certified bowling alley in the United States is in the basement of this century-old bar.

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

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

This cave holds a surprisingly colorful variety of geological oddities.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

"Looks so real, it's scary!"

A onetime gangsters' hideaway where you can dine on steaks, fine wines, and cigars just like they once did.

This lush 12-acre site was once named the finest Japanese garden in North America.

The murals have transformed a residential alley into a vibrant drive-through gallery.

It was originally part of a "terrible lizards" collection at the 1964 New York World’s Fair.

This cemetery is all that remains of a school for "wayward" girls.

Museum dedicated to the art of cutting and polishing stones.

Its eclectic exhibits range from the world’s first motorcycle to Luke Skywalker’s Land Speeder.

This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.

World's second largest particle accelerator, where nature reveals its secrets.

A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

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

What may be America's largest classic video game arcade lurks inconspicuously in a Chicago suburb.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.