A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

An abandoned 19th century quarry in the middle of the woods, remade by unnamed wanderers into a massive series of rock thrones.

A quirky collection of outsider art made from automobile parts.

A field of nothing but boulders which resembles a giant's gravel driveway.

This railway-turned-greenway provides a pedestrian link in downtown Detroit and celebrates urban artwork.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

Faces carved into the cliffs create an otherworldly walking trail.

Located inside a former bread factory, this museum explores a century of transportation history through innovations that were extraordinary or failures—sometimes both.

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

A local scoured more than 1,000 acres for stone to create his masterpiece.

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

A monument to the King's final show, complete with a time capsule.

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

Nature and art meet in this curvy creation

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.