For five and a half million steep ones, you could own this Lake Forest home designed by architect George Frederick Keck, creator of the famous "House of Tomorrow" for the 1933 Chicago World's Fair. Originally built in 1936, the home received a major overhaul at some point in the '90s, which also added a second level. At nearly 15,500 square feet with seven bedrooms and nine bathrooms, this manse is no slouch on space. The home features an indoor fountain, recessed lighting and super tall ceilings. Though the home is being marketed as another "house of tomorrow", and may have some deep roots in a forward thinking modernist master, it lost most of its '30s era Art Deco luster in its renovation and just sort of looks like another '90s suburban mega-McMansion.