This is the unfinished mega-mansion of renowned cardiologist Dr. Hector Collison. The 27,000 square foot home is on the market for $5,500,000 and contains 10 bedrooms, 10.5 bathrooms, an indoor pool, a basketball court, and much more. It is located on Bentcross Drive in Potomac. Hector and his 15 year old son died in a single engine plane crash in the Shenandoah Mountains. Him and his family were set to move into this sprawling mansion and now his wife is forced to sell it. The bank says that they owe $8,000,000 on the house. There is a video above on this story.