With 7 billion people living on the planet, it isn’t exactly sustainable for every family to have more than one home, but the folks who own the Quinta da Baronesa get points for building theirs out of natural and recycled materials! Asked to make it barely visible from the street, Studio Arthur Casas gave the striking home a landscaped roof and tall block entrance and then chiseled the remaining naturally-lit rooms into rolling green hills overlooking a golf camp.