Designed in the early 1960s by architect Seymour Harris, this 19,408-square-foot, eight-bedroom mansion in Hampshire, England—dubbed Tukal—easily snags the title of the most swingin’ listing on the market and must be worth every last penny of the (probably very expensive) unlisted asking price. According to Forbes, which astutely pointed out that the home might make a pleasing lair for a supervillian, Harris designed the place so that it would be possible to “drive his Aston Martin up a ramp into the first-floor parking bay,” which, duh, is the only civilized way to get around. In case that little perk isn’t enough, though, the low-slung, flat-roofed estate also boasts river views (complete with a mooring pontoon,) a massive indoor pool, more than 10 acres of “stunning professionally designed ornamental gardens,” and the most badass bathtub in the world. Also worth noting is some sort of very sexy red carpeted room with a retro fireplace that really needs to be seen to be believed. So without further delay, do take a look: