Director and producer M. Night Shyamalan began filming his latest movie at the former Allentown (Pa.) State Hospital Monday, according to WPVI.
The psychiatric hospital operated from 1912-2010 and, in 1998, become one of the first hospitals in the nation to ban seclusion practices.
The film, "Glass," is the final chapter in a superhero trilogy starring Bruce Willis, Samuel L. Jackson and James McAvoy.