This truly magnificent penthouse in a Cass Gilbert-designed converted mansion on Summit Hill is a blend of original character & modern updated beauty! Step inside to find lovely architectural details for comfort and elegance! The sun-drenched living room offers a mood-setting fireplace, and the formal dining room is awe-inspiring, accented with a domed ceiling with skylight and elegant chandelier, plus access to 2 decks! The gorgeous kitchen boasts granite countertops, hi-end appliances, and a breakfast room with vaulted ceiling & skylights. The main floor bedroom is currently functioning as a den, and there is a three-quarter bath and laundry nearby. Travel up the vintage 1886 staircase to the owner’s suite and the spa-like full bath with jetted tub. A second bedroom and three-quarter bath is ideal for guests. Enjoy panoramic city and river valley from the top level deck. The private elevator brings you to the studio unit, complete with a kitchen & three-quarter bath. Two car garage, AC!