Packard Automotive Plant
It took more than eight years to construct this 3,500,000sqft luxury automobile-manufacturing plant that was designed by famed architect Albert Kahn, completed in 1911, and sits on 40 acres of land. The majority of the factory closed in 1958, with some businesses using the property through the 1990s and finally dwindling to the final tenant who packed up in 2010. The crumbling behemoth has been a scrapper’s paradise, a home for vagrants, a canvas for installation artists, and even the site of a recent tiger escape. Purchased in 2013 for $405,000, demolition and reconstruction efforts have begun to bring new life to the plant, but its long-term vacancy and sheer magnitude earns it a spot on our list.