 Pei]] & Partners (now Pei Cobb Freed & Partners).At 40 stories, they are the city's tallest residential towers.Sponsored by the Boston Redevelopment Authority (BRA), as a way to bring new life to Boston's waterfront, which was at that time an ugly wasteland area mostly made up of abandoned, trash-filled spaces and parking lots, the project became a cornerstone for future progress in the area.