Hershey Park is fully a theme park.
Started out (back in history) as pretty gardens for the workers. Hershey was very much a "company town" where workers were "taken care of" in ways that don't happen now.
from Wikipedia
Early years
In 1903, Milton S. Hershey, founder of the Hershey Chocolate Company, surveyed a site along Spring Creek that would be suitable for his park. Hershey Park opened on April 24, 1907, with a baseball game played on the new athletic field. The beautifully landscaped park was an ideal spot for picnicking, boating, and canoeing. Vaudeville and theatre productions were performed on a rustic bandstand and pavilion.
A merry-go-round was installed and opened on July 4, 1908. A 1,500-seat tiered amphitheatre was built next to the pavilion. The entrance sign proclaimed, Ye who enter here leave dull cares behind.
The park was expanded in 1909 with the addition of a tennis court, two bowling alleys, a large band shell, and a photography gallery. Guests could also enjoy a relaxing ride on the Scenic Railroad. In July 1912, a carousel manufactured by Willy H. Dentzel of the Dentzel Carousel Company in Philadelphia was added to the park. The carousel was 50 feet (15 m) in diameter and featured 53 carved animals that included lions, bears, giraffes, pigs, rabbits, an ostrich, goats and deer along with two chariots. The carousel was described as the most magnificent and up-to-date carousel in this part of the country as well as one of the largest.