This is the last known photo of Nicola Tesla. On 7th January 1943, Tesla died alone in the New Yorker Hotel. The inventor, physicist, and futurist was best known for his contributions to the design of the modern alternating current (AC) electricity supply system. By the end of his brilliant and tortured life, he was penniless and had become a vegetarian living on only milk, bread, honey, and vegetable juices. Tesla spent days in a park surrounded by the creatures that mattered most to him—pigeons—and his sleepless nights working over mathematical equations and scientific problems in his head.