Nowhere can mansions grow quite as outrageous as in Texas, as evidenced by this 16,132-square-foot "neoclassic" estate in a Dallas suburb, which is about to go up for auction next Saturday. Enormous ceiling mural? Check. Seven-car garage? Check. Regulation tennis court? Yup. And, if one ridiculous mansion isn't enough for you, the same company is bringing another (smaller, but still very big) one to auction on the same day.