The Ayer Mansion is the only Tiffany-designed home in the world. Standing five stories on both Commonwealth Ave and Marlborough St, this is a rare opportunity to match a buyer's vision with a uniquely modern design. Designed by Louis Comfort Tiffany, the sleek, pale facade with bright mosaic detail challenges the Boston streetscape as much now as it did at its unveiling in 1902. Entering the great hall, the eye is drawn to the tall fireplace, vaulted ceiling and up the imperial stairs under the proscenium arch of Tiffany mosaics tiles. At the top of the first landing and seen from the foot of the stairs, a trompe l'oeil Greek temple reflects unusual depth and light. With designs in place and an award-winning team of developers and architects assembled, this private residence will offer its next occupant the opportunity to reimagine this livable work of art. With each floor ranging in size from 2700sf to 3000sf, the conceptual redesign accommodates 6 bedrooms, 13 baths and 3-Car garage.