What does the most expensive home in the US look like?

Mega-mansions are a dime a dozen in the most well-heeled circles by now, but to developer Bruce Makowsky, that's a call-to-action, not a sign of saturation. He's gone ahead and fashioned a Bel Air "giga-mansion" from a massive 3530-metre plot of land. It overlooks the beaches of Malibu and the San Gabriel mountains.

Basics first:  two master suites, 10 VIP guest suites, five bars and three kitchens, and of course, the mandatory glass-tiled infinity swimming pool. Now the kickers - there's a massage studio and wellness spa, a 40-seat movie theatre, a four-lane bowling alley, and a gallery (not garage, mind you) that's pre-filled with a S$42.5m collection of exotic cars and motorcycles. A helicopter and alligator-skin elevators are thrown in for good measure.

Now, experienced billionaires will know that recruiting staff for such a huge plot can be a real hassle, so Makowsky's gone ahead and hired a chef, masseuse and five other employees (who'll live on-site in a separate wing). The first two years of their salaries have already been worked into the price tag of the property. Bring your own head butler if you wish.