 With the end of its greyhound racing, Wonderland formed a partnership with nearby Suffolk Downs horse track to build a casino on the site, but this plan also allows the option of the track being redeveloped for commercial or mixed uses.With the legalization of Parimutuel betting by the Massachusetts Legislature in 1934, the idea of Wonderland Greyhound Park was made a possibility.The track was constructed on the site of the former Wonderland Amusement Park in Revere, which had been converted from an amusement park to a bicycle track after the park closed in 1911.