Or if you prefer, the Empire State building has about a quarter of a million square feet of floorspace, so it'll fill two Empire State Buildings. Or for a some

Or if you prefer, the Empire State building has about a quarter of a million square feet of floorspace, so it'll fill two Empire State Buildings. Or for a somewhat less impressive measure, the average size of a Wal-Mart Supercenter is 180,000 square feet, so it's about two and a half of those.