Stunning one-of-a-kind South End 3 bedroom Penthouse located in one of Boston's finest locations. Two side by side, grand scale brownstones, combined to create the entire two top floors, centered on prestigious and historic Union Park. A  private elevator opens onto both the living and bedroom levels. Bedroom level features 3 generous sized bedrooms, all with en-suite baths.  Gas fireplace, large walk-in closet, and stunning master bath complete the floor through master suite. Private deck. Enjoy open concept living/dining/kitchen overlooking the fountains in Union Park.  Gas fireplace, soaring ceilings, gorgeous hardwood floors throughout and half bath on this level. Chef's kitchen with marble counters, breakfast bar, professional grade appliances and ample storage.  A full staircase leads to a private roof deck with irrigation system, electricity, gas and view of South End, Back Bay and Midtown.  Private storage. Two full parking spaces with direct access complete this listing.