Grant St. at 6th Ave. in downtown Pittsburgh, PA on June 27, 1965 - Porter Building in the background was designed by Harrison & Abramovitz and opened in 1958 during Pittsburgh’s first renaissance. The building features an aluminum-skin exterior, three stainless steel and glass revolving door entrances, and three adjacent single stainless steel swing door entrances. The main lobby area and elevator corridor are faced with gray and white Italian marble. "Future" site of the Porter Building: A policeman directs traffic at the corner of Sixth and Grant Streets in downtown Pittsburgh. The structures at this corner would later be razed for the construction of the H.K. Porter Building. Construction of the Porter Building: The 17-story H.K. Porter Building, located at Sixth Avenue and Grant Street in downtown Pittsburgh, was designed by Harrison & Abramovitz and opened in 1958 during Pittsburgh’s first renaissance. The building features an aluminum-skin exterior, three stainless steel and glass revolving door entrances, and three adjacent single stainless steel swing door entrances. The main lobby area and elevator corridor are faced with gray and white Italian marble. Present day: The building, now known as 601 Grant Street, houses a number of small business related companies.