Part hotel, part art installation, the Utter Inn is like an aquarium inverted—ten feet under the surface, you're the one in the tank. The bright red, two-story floating Swedish cottage (whose second story just happens to be underwater) bobs in the middle of Lake Mälaren, just west of Stockholm. It's the second such creation of hotelier-slash-artistic-madman Mikael Genberg, whose penchant for putting little red houses in unusual places has resulted in the oak-tree-mounted hotel Woodpecker and, tentatively slated for 2011, a similar project on the moon.
Down on Earth, however, this single-"suite" cottage is your chance to sleep with the fishes—quite literally. You'll be ferried out the kilometer from shore and left to enjoy the sunset on your floating terrace; a solar-paneled roof powers the necessities (heat, bathroom, small kitchen) for your night in the water, and there's a kayak at your disposal, should you feel the need to explore your surroundings. Spring for the Deluxe service and you'll be delivered a full Swedish dinner before you head below to your private bedroom—private, that is, except for the fish passing by the panoramic windows.
Don't worry—they're not watching.