Where was the first open heart surgery performed?

Dr. Daniel Hale William-

James Cornish was dying. He had been carried into the emergency ward at Provident Hospital (which was founded by Dr. Daniel Hale Williams as the first segregated hospital) on Chicago's South Side, bleeding from a knife wound in his chest.

Dr. Daniel Hale Williams called for six of his fellow black physicians to help him get the dying man into an operating room. Carefully making an incision in his patient's chest, Williams exposed the man's still-beating heart and his near-fatal wound.

Williams and his surgeons sewed up the ragged gash located to the right of the heart, and, saying a prayer, sutured the chest incision, ending the world's first open heart surgery. The year was 1893.