American houses are generally getting bigger these days as our increasingly overweight populace spills out into sprawling McMansions in cookie-cutter suburbs, which is OK if you're into that sort of thing.
In Europe, however, the focus is on technologically advanced, lower cost construction that maximizes the landscape and the available light and suits the climate.
That doesn't mean lower quality, just more reliance on materials like metals and concrete that never used to be considered finished enough for residential use.
Madrid's striking Aluminum House concept by Fran Silvestre Arquitectos shows how it should be done.
For starters, it's surrounded by gardens with big trees providing both shade and, of course, plenty of oxygen.
The metallic house features an aluminum outer shell set off by a mix of stone, glass and metal, with indoor and outdoor living areas melded together perfectly.
Inside there are large windows throughout, widespread marble flooring, a stylish kitchen, and minimalist bathrooms.
We can all get inspired by Spain on this one....