Construction on San Francisco’s emblematic Golden Gate Bridge and Bay Bridge began in 1933. American photojournalist Peter Stackpole captured the scale and complexity of the projects, celebrating the role of the thousands of workers involved. The images are beautiful, modernist works of art, as Stackpole composed his shots to juxtapose the geometric beauty of the bridges with the landscape of the wider city. He masterfully uses negative space; workers are silhouetted against the city and the sky, capturing the energy, determination, and courage they brought to their work. Stackpole’s photographs are a record of an extraordinary feat of engineering that geographically unified the Bay Area and created two visual icons now synonymous with San Francisco.