The preserved remains of the former Milwaukee County Hospital for the Insane are hidden in the wooded grounds of County Park.

William Faulkner kept his beloved estate wild and untamed.

This museum pays tribute to the Cherokee leader who created a written language for his people.

This improbable contraption was passed down through five generations of industrious Tennesseans.

This simple, broken column marks the final resting place of one of America's most famous explorers.

The first full-scale tunnel built in America is short but scenic.

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

More than five miles of underground passageways.

Visit this playground of waterfalls, caves and sinkholes.

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

Enormous lake at the bottom of a unique cave system.

An Alabama courtroom where two famous American authors played as children became the setting for a Pulitzer Prize-winning novel.

Booker T. Washington's home at the Tuskegee Institute was a gem of splendor.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

A unique book shop with a collection of rare tomes and a nostalgia museum.

Every last book in this bookstore is signed by the author.

The former home of the hard partying literary power couple is now one of the only museums devoted to their story.

Famous for its bio-luminescent inhabitants, known as "Dismalites" .

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

148 feet long and in the middle of a verdant forest.

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

Trade in that pesky human soul for cold-hard circuits.

The world's largest woodcarving collection includes dozens of Bible scenes and a wooden bestiary, all carved by one man.

A fairytale art house in the middle of Wisconsin.