If you had $15 million to spend on a home, would you choose to drop that cash on this concept home set to be built in a Cotswold nature reserve? Apparently that is just what an anonymous buyer did recently, making the "Orchid House" the UK's most expensive country home—and it won't be completed for three years. For that money the buyer (rumored to be in the entertainment industry) will get a home shaped like a bee orchid that should produce more energy that it consumes thanks to an underground pump and geothermal heating. Great, so the house will pay for itself in about a 1,000 years. Additional pic after the break.