At the beginning of the twentieth century Belleville had its own amusement park. Called Hillside Pleasure Park, it was located on the west side of Washington Avenue at Greylock Parkway. Hillside Park began as a picnic ground next door to a saloon. It grew into a major amusement park with the addition of a roller coaster, parachute jump, carousel, razzle dazzle, and other rides. Hillside Park also had a pavilion for dancing, a race track and grandstand, and a man-made lake with boats for rent. Later it was known as Riviera Park.

Source: Belleville: 150th-Anniversary Historical Highlights 1839-1989 by Robert B. Burnett and the Belleville 150th-Anniversary Committee Belleville, New Jersey. 1991.