Pennsylvania's own Roswell-style UFO mystery.

A failed piece of Orientalism has become the proud symbol of a community.

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

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

An abandoned stretch of highway, deteriorating next to the operational one.

Mysterious rocks that ring musically when struck.

A toxic ghost town sitting atop a massive coal fire.

The world’s first penitentiary, meant to be humane, drove men insane.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

One of the only memorials dedicated to journalists who died in combat.