The resort features a 210,000-square-foot casino 15 dining and lounge venues 671 guest rooms and suites including New England’s largest standard hotel rooms 50,000 square feet of indoor and outdoor event space an ultra-premium spa and a four-season, six-acre Harborwalk, featuring pedestrian and bike paths, picnic park, gazebo, viewing decks, waterfront dining, and lush green space with magnificent floral displays. Totaling $2.6 billion in single phase development, Encore Boston Harbor is the country’s most expensive resort development of 2019, according to officials. Encore Boston Harbor officially opens its doors today.