The revival of a scenario first envisioned some 30 years ago could yield Boston’s tallest residential building. Simon Property Group has unveiled plans for a 47-story luxury condo tower atop its Copley Place Mall, an upscale shopping hub in the historic Back Bay neighborhood. The proposed project, designed by Elkus Manfredi Architects, would also add more than 100,000 square feet of commercial space to the retail center.

Elkus Manfredi Architects is designing a slender, 47-story luxury condo tower (pictured left of center in middle image) that will sit atop Copley Place Mall, an upscale shopping hub in Boston’s Back Bay neighborhood. The project also calls for adding more than 100,000 square feet of commercial space to the retail center, including 54,000 square feet to its anchor store, Neiman Marcus (above).