Michael Phelps – $2.5 Million, Scottsdale

The 23-time Olympic gold medalist, Michael Phelps, sure came a long way from the athlete who swam for energy to the man who has millions in his bank account. After one of his summer games, he eventually found his newest real-estate investment: his home in Scottsdale. The 6,000-square-foot house that sits on an acre wide property has six baths, five bedrooms, four fireplaces, and a huge kitchen. Of course, the home wouldn’t be complete without a Phelps’ size swimming pool.