The most unloved grain elevator in Brooklyn was a “Magnificent Mistake.”

An abandoned castle owned and ignored by Masons carries a cursed history.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

This beautiful architectural gem was the first waste treatment facility in Boston.

Run by a eugenics advocate, this aging institution conducted secret radiation experiments sponsored by Quaker Oats.

This parking garage has given itself over to graffiti artists and the neighborhood can't thank them enough.

Once known as the Illinois Asylum for the Incurable Insane.

This decrepit abandoned building is made all the more eerie by its dark history.

An abandoned horticulture institute gloomily presides over rows of derelict and vine-wrought greenhouses.

An abandoned meat mecca now serves as an excellent locale for urban exploration.

World War II-era Nazi compound nestled in the Santa Monica hills.

This structure among the trees was the result of divine inspiration.

Its 27 graveyards represent the many nationalities and ethnic groups that voyaged to this wilderness in the late 19th century.

The remains of what was once the world's steepest passenger funicular.

The above-ground crypts at this Catholic cemetery face north-south instead of the usual east-west.

Storage units with a wartime past.

A little-visited ghost town state park offers a glimpse into Montana’s "Silver Queen."

These abandoned waterworks are crumbling into the Potomac River.

The ruins of a town wiped out by the second-largest earthquake in recorded history.

What remains of the simple red brick chapel where the women's rights movement began.

A forgotten Cold War relic hidden in the outskirts of a Wisconsin city.

An abandoned car and strange wooden debris are among the scattered remains of the old sand and gravel quarry.

This Cold War missile launch site has been abandoned for 40 years.