Opened in 1976, this monster-sized version of the fast-food franchise is sometimes called the Epic McD.

The world's longest known cave system.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

One of the few working locomotive roundhouses in the United States.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

World's largest Christmas store.

A quaint miniatures museum that turns its focus towards the lives of Americans in a simpler time.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Taxidermy and miniatures come together to create this unique museum.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

Home to some of Indiana's last bison herds.

This grave marks the final resting place of pioneer John Chapman, better known as Johnny Appleseed.

A bakery and variety store filled with an extensive taxidermy collection.

Prehistoric animals decorate this popular outdoor park.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

Live long and prosper in Tennessee.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Follow the steps, and this roadside artwork will teach you how to dance.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

This historic train station has been converted to a locomotive themed hotel.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.