A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

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

Acres of natural wonders left behind by a socialite-turned-gardener.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

One of the now-less-hidden floral gems of the "Emerald Necklace."

The drama of nature in full effect in this Nevada State Park.

A 120-year-old legend concerning an empty circular patch in the North Carolina woods.

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

This bridge is haunted by the ghost of a distraught mother.

If New Orleans is the birthplace of the "cocktail," why does their own museum of cocktail memorabilia beg to differ?

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

This hilltop park offers magnificent views and a Frank Lloyd Wright masterpiece.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

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

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

The secret city built by the Manhattan Project.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."