This forgotten beach house built to look like a Frank Lloyd Wright masterpiece overlooks a hidden beach.

The only place in America where anyone who wants can shovel coal aboard an antique train.

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

The Bong-area park police have asked visitors to please, stop stealing the signs.

Tour the luxe "glass cage" that inspired and unnerved the architecture world upon its debut.

This historic house museum that celebrates one of the world's most influential social reformers is also one of the most haunted locations in Chicago.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

A century-old network of freight tunnels underneath the city's historic business district.

A Museum of Holography frozen in 1974.

No one knows how many bodies are in this vault in a Chicago public park.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A trailblazing sovereign nation tucked in the American state of Wisconsin.

This overgrown Illinois water park offers a whole new type of adventure.

A remote hill on a stretch of country road where the laws of physics are defied... or so it seems.

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

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

A towering Art Deco movie palace made to look like a Mayan temple.

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

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

Meant for a railway that was never built because of the Great Chicago Fire, these piers still stand nearly 150 years after they were installed.

This national park dedicated to the tallgrass prairie ecosystem still displays its military past.

This historic Illinois "Muffler Man" has been converted from axe-touting lumberjack to rocket-wielding space ace.

Lined with plaques and tributes to veterans, this patriotic street was founded by Mexican immigrants.

A giant wooden statue of one of the greatest pitchers in 19th-century baseball.