Plans began shortly after then-Massachusetts Governor Deval Patrick signed a law to allow casino developments in the state in 2011. The journey to Encore’s opening has not been without its hiccups. last call for active gamblers on the casino floor), and unveiling 15 restaurants and bars, including one that’s a joint venture from two prominent North End restaurant families. Encore Boston Harbor, a Wynn Resorts hotel and casino that, despite its name, is not actually situated on Boston Harbor, opens on Sunday, June 23, accepting customers to its sprawling gambling spaces ( with 4 a.m. A years-long casino resort development that has risen to tower over the shores of the Mystic River finally opens its doors this weekend.