Set in the heart of Back Bay, this exquisite direct-access elevator penthouse duplex with private terrace and parking offers the finest standard of living on Boston's most coveted street. Entry to expansive arched-entry living room with soaring ceilings and beautiful center fireplace surrounded by custom built-ins. Perimeter moldings extend from oversized bow front windows across entire living level, with gleaming hardwood floors throughout. Living room flows effortlessly to formal dining area opposite half bath, perfect for entertaining. Well-appointed granite and stainless steel chef's kitchen/family room with center island and breakfast bar, further enhanced by additional fireplace and wall of custom built-ins. Upper level features large master suite, with elegant en-suite bath and two walk-in closets for ample storage. Walkout on this level to stunning private terrace with sweeping views and built-in irrigation system. Large second bedroom also on this level, complete with en-suite bath and beautiful views out to terrace. Central A/C throughout, and exterior private storage room. Full direct-access deeded parking space included. All this just steps from Back Bay's finest restaurants, shops, and all the city has to offer - a true masterpiece not to be missed!