An abandoned railroad tunnel forgotten by time awaits inquisitive hikers.

This 13-foot smiling peanut in Georgia helped Jimmy Carter win the 1976 presidential election.

A stockpile of childhood lunch pails turned collectibles.

Secret gardens just a few miles from downtown Atlanta.

The remains of one of America's first radiation testing grounds still rest ominously in a Georgia forest.

Where school buses go to die and be reborn as whimsical works of art.

The ruins of a cotton mill that was burned in the Civil War are still hidden in a Georgia forest.

One of the world's largest automobile junkyards is a unique landscape of metal and moss.

An underground magnet for ever-changing street art.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

Tour the sci-fi-esque reality of governmental disease management.

What started as three small gnomes at the base of a tree has grown into a full-blown gnome home.

An elaborate, hidden model train in the Needham Town Forest.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

A mysterious collection of stones stand outside a small New England town.

Stay at this storybook estate, featuring Sir Henry Hudson Kitson's masterpiece "Gingerbread House."

A historic bridge with a lovely acoustic anomaly.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

A beautiful Victorian-era cemetery, complete with a miniature village.