These incredible underground houses carved from natural rock formations local to Kandovan, Iran might seem like a new gimmick to attract tourists, but these inherently low-energy houses are actually 700 years old!
The Downtown Fargo: Urban Infill Design Competition showcases creative solutions for creating a downtown block that still provides adequate parking spaces.
This house in Leipzig, Germany designed by Atelier st combines contemporary styling with a degree of energy efficiency that approaches Passive House standards.
