Built in 1895, Asheville’s Biltmore Estate is the largest private home in the United States—by a long shot. The estate is open to the public, drawing in nearly two million tourists annually who wish to take in its bewildering scale (and secrets). It’s no coincidence, then, that the closest McDonald’s is, by some subjective measure, “the world’s fanciest McDonald’s.” But it wasn’t always. Even before it was open for public visitation, the Biltmore employed so many workers that they had a staff village built for them just off the property’s…