Benson then went to New Hampshire to open his own animal park. After opening to the public in 1926, Benson's was expanded in 1932–33 with the addition of a permanent Wild Animal Circus. A special "Jungle Train" ran from Boston to Hudson on Sundays, with admission to Benson's included in the ticket price. By 1934 the parking lot could accommodate 5,200 cars. In 1940, animal trainer Joe Arcaris began his association with the zoo, performing acts with lions and other animals till the late 1970s.