This house is a 17,870 sq ft monster at 1 Saint Petersburg Ct in Rancho Mirage, California. The house has 7 bedrooms and 10 bathrooms on 5 acres. Features include: 2 bedroom guest house, 7 car garage, tennis court and an array of standard mansion amenities. What really separates this mansion from any other is the landscaping. With 5 acres, landscaping is a difficult task, but this home has it handled very nicely. There are waterfalls, streams, pools, spas, fountains, grottoes, an outdoor maze and outdoor dining areas. The landscaping is the highlight of this home. It is listed at $16,700,000. What do you think?