To the Greeks, Hemeroscopium means a place where the sun sets. To create a home with enough substance to support the horizon, Spanish designer Antón García-Abril Ruiz and Ensamble Studio went large scale, creating a massive steel and concrete temple in Madrid, Spain. Planning for the Hemeroscopium House took over a year, but construction only lasted seven days because the structural elements of the 4,300 square-foot home were prefabricated off-site and assembled in a “perfectly coordinated rhythm.” A cantilevered swimming pool juts out of the home’s second story, above a sparse, zen-like lawn. The focal point of the design is a 20-ton granite boulder “G point” (G-spot, if you will) that rests atop one of the private residence’s concrete I-beams, an element the design team included to illustrate the home’s gravity concept. [via archinect]