A mansion known only as "The Manor" has just become America's most expensive home, boasting a $200 million price tag. Built in 1991 on five acres of land in the Holmby Hills section of Los Angeles, the house is a staggering 56,500 square feet and has 123 rooms, including seven bedrooms and a service wing. The listing refers to it as the largest residence in Los Angeles. To get a handle on just how big that square footage number is, the average new home completed in America is 2,392 square feet, according to the 2010 Census. The home is also equipped with a swimming pool, formal garden, and 100-car parking lot, ... (full story)