#Repost @digspgh ・・・ It’s hard to remember Pittsburgh’s skyline without the 841-foot U.S. Steel Tower looming above it. Construction began on the Tower in March 1967 and officially concluded Sept. 30, 1971. Follow @digspgh to find out more about the final two pictures. #Pittsburgh #PGH #412 #Pittsburghhistory #PGDigs #PGPhotos #blackandwhite #retro #vintage #architecture #skyscraper #skyscrapers #skyscape #buildings #buildinglover