Boston's Back Bay has a startling new landmark, whose skeletal domed crown strikes a discordant note among the surrounding flattops, the Prudential Center (BB79) and the John Hancock Tower (BB38). Built as the centerpiece of a major redevelopment plan for the twenty-seven-acre Prudential Center, this thirty-five-story glass office tower—its slim vertical piers divide gridded windows—includes retail space and a pedestrian arcade that connects to the present mall. The tower is only the most conspicuous element, for a massive eight-story building with duplex luxury condominiums wraps around it, above a lofty ground floor. At the corner of Huntington and Belvedere streets, a three-quarter circle houses a solarium, which connects the residential with the commercial.