This backyard terrace in Barcelona has a pergola of lightweight iron that supports roses, bignonia and Virginia creeper. These leafy species divide and protect the owners from the view of neighbors. A screen of tropical wood erected on the side of the adjoining terrace further defines the space. Mimosa, a Japanese flowering crabapple, and various aromatics in planters surround a marble table, creating a leafy oasis, a small “green lung” in a space between apartment buildings.