Finished a few years ago by Mexican architecture firm Senosiain Arquitectos—and burned into our subconscious just today, thanks to a feature on Laughing Squid—Nautilus House is a most unusual abode located not far from Mexico City. According to World Architecture News, it's a private residence meant to accommodate a young family that was sick of ho-hum rectilinear dwellings: "The metaphor was to feel like an internal inhabitant of a snail, like a mollusk moving from one chamber to another, like a symbiotic dweller of a huge fossil maternal cloister." A hilly topography set the course for the spiral, which offers, according to the project description, "the sensation to float on vegetation." Unsurprisingly, the interior photos are. Awesome.