From the typical musician's penthouse studio of early Hollywood films to the dream apartments of 1950s Playboy magazine to Matt Helm's revolving bed (that tilts him into his pool!), we've seen some swinging pads in our day. Imagine a subterranean lair, like in Danger Diabolik, but with a Playboy Mansion slant. Lots of Ken Adam's curves and a Kubrick futuristic glow. Instead of the tilting bed, how about a tube that you can jump into- ala Thunderbirds- that slides you down into your pool below? You go it! Located in Bowdon, Cheshire UK, Country Life has it listed for a cool 2 million pounds. Check it out here.