Built on a 4.5-acre brown field — home to the former Bethlehem Steel industrial complex in Bethlehem, Pa. — SteelStacks features an arts center with restaurants and concert venues, an outdoor concert pavilion, and the local PBS affiliate’s new media and education center. With five iconic blast furnaces serving as a towering back drop, the cultural center, which opened in 2011, is expected to expand to include the National Museum of Industrial History.