The Dartmouth Co. has put the former Boston Sports Club in Lynnfield, MASS. up for sale. The two-story, 45,434-square-foot building is located on nearly six-acres at 425 Walnut St. The property is located adjacent to MarketStreet, a 663,000-square-foot mixed-use lifestyle development anchored by a Whole Foods and Apple. "The 425 Walnut Street site represents a ...