6. Crooked House – Himley, England
Photo: Bloomberg/Getty Images
What can top the first billion-dollar home? Antilla, also known as "the Taj Mahal of the 21st Century", is a 27-story skyscraper equipped with 600 full-time staff to help maintain the monstrous monument of steel. You may be thinking right now "who could possible own this beast of a building?", and the answer is Mukesh Ambani of course, the Indian business magnate who has an estimated net worth of $27 billion dollars. Talk about bang for your buck.