On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

A memorial to the firefighters who died in an industrial disaster is housed in a small public park.

No one knows who painted this mysterious mural in a Penn State basement.

This 19th century machine put animals (including humans) in boxes to study how they metabolized calories.