Welcome to this esteemed Back Bay penthouse on the waterside of Beacon between Fairfield St. & Gloucester St. A home of unparalleled elegance & rich architectural details. This once in a lifetime offering exudes timeless elegance & breathtaking views through oversized floor-to-ceiling windows. Upon stepping off the direct entry elevator, enjoy a view of the Charles River & take a front-row seat to dynamic water sports & all that the Esplanade has to offer. Soaring ceilings, stunning millwork throughout. Sip your morning coffee in the sun-drenched kitchen then unwind & indulge your creativity in the corner library. The primary suite serves as a serene retreat with sitting room, spacious bath & exceptional closet space. An understated masterpiece, this residence offers comfort & sophistication with parking, exclusive fully outfitted fitness/bonus room with half bath & full-time superintendent providing white-glove service.