The "Rainbow Houses" in Houten, Netherlands, is an urban project designed to bring vibrancy and diversity to the residential landscape. Located at the man-made Lake Rietplas, in Houten, near Utrecht, the Rainbow Houses stand out for their colorful facades and innovative design. In addition to their aesthetic appeal, the Rainbow Houses incorporate sustainable design features to minimize environmental impact and promote energy efficiency. These features may include solar panels, green roofs, and rainwater harvesting systems, reflecting the Netherlands' commitment to sustainability.