This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

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

A wacky two-story folk-art assemblage of carved and found objects, with lights, motion, and sound now in need of financial support.

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

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

The world's longest known cave system.

One of the few surviving "Wigwam"-themed motels.

This huge clock made of flowers and simple machinery was once used a political weapon.

This 19th century mansion façade adorned with immigrant patriotism is a symbol of Louisville’s history.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

Prehistoric animals decorate this popular outdoor park.

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

Outstanding collection of 19th century medical instruments includes a life-size figure cast from as many as 200 cadavers.