25 Green Roofs That Bring Spectacular Homes to New Levels

In the dense municipality of San Isidro, Argentina, Buenos Aires–based firm BAM! Arquitectura built the MeMo House, which is made from reinforced concrete and features garden space on all three levels. An undulating "system of green ramps," as the architects describe it, creates a garden terrace that flows from floor to floor. The green roofs are largely populated with native plants, requiring less water expenditure, and the homeowner also grows her own vegetables.