In the heart of Cow Hollow, equidistant from bustling Fillmore Street and Union Street, sits a rare offering: a 2-level penthouse seamlessly blending modern design, a spacious floor plan, and the warmth of indoor/outdoor living. Constructed in 2009, the contemporary residence centers around a double-height Great Room with sunlight pouring into the expansive space. The open Great Room features rich walnut floors, full height windows, a sleek marble kitchen, dining area, and spacious living room with a gas fireplace. The volume and scale of the living areas are unparalleled, boasting nearly 20' ceilings, incredible city outlooks, and unique architectural design. The upper level office mezzanine overlooks the living area below, and opens directly onto a large terrace for outdoor entertaining and big City views to the east. The primary suite, with western outlooks and a walk out terrace, boasts a walk-in closet and luxe bath with soaking tub, shower, and dual vanities, and skylight. 2 add'l bedrooms, both with terraces, share a hall bath. Exclusive roof rights and easy access offer opportunities for sweeping GGB and Bay views. Additional amenities include virtual door/intercom, recently installed central A/C, storm shutters, motorized blinds, in-unit W/D, 1 car garage + storage