Designed by CBT Architects, the complex occupies a long city block between the Fort Point Channel and the Greenway. It includes a seven-story residential structure along Atlantic Avenue, and a 31-story office tower whose base is fashioned out of the former Tufts and Graphic Arts buildings. Those buildings were gutted to make way for new offices, public event space, and ground-floor restaurants.

Smith & Wollensky, recruited in part by Menino, will open a 10,000-square-foot restaurant on the channel side this summer, with outdoor bar and dining. The restaurant will retain its existing Boston location on Arlington Street.

Atlantic Wharf will ultimately contain four other restaurants, including a coffee shop, casual lunch spots, and another fine-dining restaurant on Atlantic Avenue. The coffee shop is expected to be operated by Sorelle, which has two locations in Charlestown. The operators of the other restaurants have not been announced, although Boston Properties said at least one will be operated by a celebrity chef.

Menino yesterday called the project the “cornerstone’’ of the city’s efforts to transform Fort Point Channel into a recreational waterway. The channel, once a workhorse of industry and a staging area for protests that preceded the Revolutionary War, was rid of many of its pollutants during the Boston Harbor cleanup and in recent years has benefited from surrounding redevelopment. The InterContinental Hotel opened in 2006 and the Boston Children’s Museum expanded and redesigned its building on the channel.

The Boston Society of Architects’ 15,000 square feet of offices will be three times its current space at 52 Broad St. The added room will allow the group to host bigger public exhibitions.