Homes Of The Billionaires

As the ranks of the über-wealthy grow, so does the number of stratospherically expensive residences built to shelter them.
Look at just the first several months of 2006. Among the high-flying properties that have hit the American market this year are a $135 million estate in Aspen, Colo., (currently the priciest in the U.S.), a $125 million Palm Beach palace owned by Donald Trump, a $100 million estate nestled near the shores of