551 Madison Avenue offers office spaces designed for meaningful work. Great care has been put into aesthetic and environmental details so your team can focus, be more productive, and collaborate better in the office than at home. When it comes to work, space matters. Midtown Manhattan is the largest Central Business District in the world. It is known as the country’s largest office concentration and a major hub for media, entertainment, and financial businesses. 551 is located in the heart of this commercial and retail corridor, with close proximity to everything your business needs to thrive.