There are "green" houses, and then there are homes that are literally green. Oas1s Houses are both. Designed to resemble trees, the homes have facades of live vegetation, and measure roughly 6x6x12 meters, with 160 square meters of living space spread across four floors. The interiors are sparse and modern, yet warm thanks to the generous use of wood, and are finished with skylights, large windows, and French balconies. And if you're wondering about the name, the homes are shaped like the numeral "1" — hence the misguided moniker.