Hudson Yards, the largest mixed-use private real estate development in American history, is open for business on the west side of midtown Manhattan. The complex of glass buildings includes offices, residences, shops, restaurants and a hotel. The new neighborhood’s tallest building, at 101 stories, will have the Western Hemisphere’s highest outdoor observatory (Edge). Hudson Yards’ focal point is the plaza’s 15-story Vessel, a climbable sculpture laced with 154 staircases and 80 landings that offer views of the city from different vantage points