Exceptional architect-designed duplex by Jeremiah Eck in one of Cambridge's most beloved neighborhoods. This stunning 2BR/2BA home spans the 2nd and 3rd floors of 34 Foster Street. Eck's celebrated mastery of scale and light is on full display, with soaring ceilings and oversized divided-light windows framing a lush green canopy and dissolving the boundary between indoors and out. The open living and dining area, with warm hardwood floors, flows effortlessly into a beautifully appointed kitchen with breakfast bar and pantry, ideal for entertaining or everyday living. The second floor includes a generous bedroom and bright home office/study offering flexible living options. Upstairs, the lofted primary suite features skylights, abundant storage, and a private full bath. Just moments from Harvard Square, the Red Line, and the Charles River trails, this luminous residence blends architectural brilliance with exceptional convenience.