When the 420-seat Parkway Theater opened nearly 100 years ago, it was a stamping ground for the elite, but the theater fell into disrepair in the 1970s. When construction is completed, the renamed Stavros Niarchos Foundation Film Center will have three screens, 600 seats and a live performance space. Classrooms and office space for film students studying at the Johns Hopkins University and at the Maryland Institute College of Art will be located across the street, at 10 E. North Ave.