A lush green oasis in the middle of Chicago.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

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

An enormous park-like oasis, full of famous Chicagoans' graves.

A monument to the art of slicing people open.

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

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

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

A reservoir of vintage pinball machines and arcade games for the nostalgic and thrill seeking.

A lavender labyrinth so large it’s visible on Google Earth.

In which a local geological marvel becomes a quaint roadside attraction.

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

This strange, small castle on the bayou has withstood the test of time and weather.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

A relic of the Cold War in Chicago.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

You can find America's highest suspension footbridge at Grandfather Mountain in North Carolina.

A notorious Route 66 eatery once frequented by Al Capone.

A 1950s Googie burger stand is now a Los Angeles landmark.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

At the top of the hour, this steam-powered clock's eight brass whistles play "Back Home Again in Indiana."