The abandoned George Wharton Pepper Middle School in Philadelphia was built with a fatal flaw that would lead to its closure just over 40 years after it opened. Find out what went wrong at https://www.abandonedamerica.us/george-r-pepper-middle-school
Edit: Misread my own article. It was open 37 years.
@AbandonedAmerica Brutalist architecture scares the hell out of me.