

The famous span, opened in 1883, is a National Historic Landmark. On its northern end, the bridge connects with Fort Pitt Boulevard. (Steve Mellon/Post-Gazette)

Pittsburgh is framed by the Rachel Carson Bridge, left, and Andy Warhol Bridge. (Steve Mellon/Post-Gazette)

Completed in 1906 by Pittsburgh industrialist Henry Phipps, the Fulton Building is now the Pittsburgh Renaissance Hotel. (Steve Mellon/Post-Gazette)

Traffic and streetlights bathe the Golden Triangle and the nearby Allegheny River in color and light. (Steve Mellon/Post-Gazette)

Most buildings on the street’s 600 block were dark shortly after a recent rush hour. (Steve Mellon/Post-Gazette)

The Allegheny County Courthouse, completed in 1888, is dwarfed by newer neighbors. (Steve Mellon/Post-Gazette)

Lighting up this intersection is the Lantern Building, illuminated by mulicolored LED lights. The building houses an exhibit, put on by PNC’s Legacy Project, that highlights Pittsburgh history. (Steve Mellon/Post-Gazette)