This very unique pre-war Madison Avenue townhome is suitable for residential, commercial, or both, with street level retail/gallery possibility. It spans seven stories and 12,000 square feet, has an elevator and grand staircase, and features 10 bedrooms. A curving grand staircase runs the full height and it has hardwood floors throughout. The home includes a large basement with ample storage, a reception area, and fireplaces on four floors. All yours for $72 million. More From Forbes: Great Escapes From Modern Life The Most Outrageous Workplace Luxuries Famous Family Fortune Fights The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.