reading Terminal train Shed

​The Wilson Brothers engineering firm designed the train shed's 260-foot-wide iron-and-steel roof, which was the widest single-span train shed in the world when it was completed. Designated a National Historic Landmark in 1976 and listed on the National Register of Historic Places, the massive steel-and-glass structure is notable as the oldest surviving single-span arched train shed in the United States.The Wilson Brothers engineering firm designed the train shed's 260-foot-wide iron-and-steel roof, which was the widest single-span train shed in the world when it was completed. Designated a National Historic Landmark in 1976 and listed on the National Register of Historic Places, the massive steel-and-glass structure is notable as the oldest surviving single-span arched train shed in the United States.