Renie began working as a photographer for Disneyland in 1959 and remained for 40 years. He became the chief photographer for the park, and in addition to shooting countless celebrities and dignitaries that would visit Disneyland, such as Emperor Hirohito of Japan, Prime Minister Nehru of India, and a number of US Presidents, Renie also photographed some of the most well-known photos of Walt Disney. He captured all the shows, parades, attractions and special events at Disneyland during his time there. Renie also took some of the most well-known photos of Walt Disney himself. Perhaps his best known photograph is of Walt, walking alone through the castle, an image that has later been dubbed “Footsteps,” and in a fire truck in front of the castle, which turned out to be Walt’s last visit to Disneyland.