Microsoft co-founder Paul Allen has purchased a new mansion in Atherton, California. Allen paid $27 million for the estate, which sits on two acres of land and has a 22,000+ square foot mansion. The home features walls of glass, vaulted ceilings, six bedrooms, four powder rooms, a spa, a home movie theater and seven fireplaces. There is also a detached guest house with two bedrooms and a kitchen. On the outside, there’s a private pool, fire pit and patio area.