Gillian's Wonderland Pier 601 Boardwalk Ocean City Get Directions Gillian's is a historic amusement park founded in 1929 by David Gillian, who first came to Ocean City in 1914. Gillian's Wonderland Pier is mostly famous for its 144-foot Giant Wheel, one of the largest Ferris wheels on the east coast. VISIT WEBSITE(609) 399-7082