With its stony facade, this compact home looks as if it could have been built a century ago. So you might be surprised to learn that the hillside house was actually constructed in 2010 by the Madrid-based architecture firm, Ábaton. Originally, the homeowner wanted to renovate an abandoned stable that was located on the property and convert it into country house. When the architects discovered that the stable was too frail to repurpose, they started from scratch. The result is totally functional, completely sustainable yet still harkens back to its roots.