No, this is not the newest contemporary museum -- but a stunning single-residence home in Madrid, Spain. With a substantial green roof and a low profile, the energy-efficient home’s placement is very inventive. Behind the grey concrete walls is a high-design marvel tucked under the gently sloping landscape. Spotted on Plataforma Arquitectura, A-cero’s Concrete House II is a potent design with some substantial green features that help compensate for its sheer scale.
