Gillian's Wonderland Pier was a historic amusement park in Ocean City, New Jersey. It was founded in 1965 by Roy Gillian, son of David Gillian who first came to Ocean City in 1914. It was located near the beginning of the commercial boardwalk on 6th street. Gillian's was generally considered to be an institution of Ocean City, with grand openings and pre-seaso…Gillian's Wonderland Pier was a historic amusement park in Ocean City, New Jersey. It was founded in 1965 by Roy Gillian, son of David Gillian who first came to Ocean City in 1914. It was located near the beginning of the commercial boardwalk on 6th street. Gillian's was generally considered to be an institution of Ocean City, with grand openings and pre-season sales for the location historically having drawn crowds multiple blocks long, and employed many local youths during the summer, and in more recent years, many Eastern European workers.