This is an extraordinary and extremely rare opportunity on Beacon Hill overlooking Louisburg Square. No. 86 Mt. Vernon is being sold with No. 17 Willow Street (MLS 73131096) an adjoining property on a coveted corner location across from the leafy private square. 86 Mt. Vernon is an exceptional circa 1875, 20' wide townhouse offering approximately 4500 square feet of gracious living on four floors with an expansive landscaped rooftop terrace and direct elevator access to all floors. No 86 Mt Vernon is comprised of 5 Bedrooms, 4 Ensuite Baths and 2 Half Baths, a Living Room, 2 Family Rooms, 2 Kitchens, and more. 17 Willow Street is a bright and sunny duplex comprised of 2 Bedrooms, 2 Ensuite Baths and 1 Half Bath, Kitchen with Family Room and Breakfast nook, Dining Room, Living Room with a paneled office, a den, and private outdoor space.Two (2) garage parking spaces at the Brimmer Street Garage complete this 2 property offering.