High above City Hall Park, Residence 20B is a corner three-bedroom, three-and-a-half-bath home at 150 Nassau Street, the American Tract Society Building. Completed in 1895, it is one of the earliest skyscrapers in New York. The residence spans nearly 2,300 square feet beneath 10-foot ceilings. Oversized windows open to the north and west, taking in the Municipal Building, the Woolworth Building, and the Manhattan skyline, with views reaching to both the East and Hudson Rivers. The living and dining room measures more than 21 by 22 feet and turns the corner of the building in a continuous run of windows. An original riveted steel column stands at its center. A fireplace with a slim steel mantel anchors the far wall. Low built-in cabinetry lines the perimeter beneath the windows, providing storage and display without interrupting the light. Oak floors and gallery track lighting carry through the room. The kitchen opens directly onto the living space. A long marble-topped island with seating for three faces dark wood cabinetry, a Sub-Zero refrigerator, a professional gas range, and a stainless steel backsplash, with open glass shelving at one end. The layout suits both a serious cook and an evening with guests. The primary bedroom sits in its own wing and runs more than 26 feet. It has louvered shutters, multiple closets, and a direct view of the Municipal Building's tower. The en-suite bath is finished in marble and white subway tile, with a double vanity, a glass-enclosed shower, and a separate tub. Each secondary bedroom has its own character. The first is entered through an oversized sliding wood door, with built-in cabinetry below windows that look toward Midtown. The second sets its window within floor-to-ceiling built-in shelving. Two additional full baths serve these rooms. The powder room is clad in black glass mosaic, with a floating marble sink and a wall-mounted faucet. An in-unit washer and dryer and generous closet space complete the home. 150 Nassau Street is a full-service condominium with a full-time doorman, a live-in superintendent, a gym, and a common roof deck. An on-site garage is managed by a third-party provider. The building occupies a quiet corner across from City Hall. TriBeCa and the South Street Seaport are close by, and all major transit lines are within easy reach.