Ten floors above Michigan Avenue, this condominium’s residents retreat to an urban Acropolis: nearly 14,000 square feet of luxury green and flowering landscape, with spacious zones in which to entertain friends, enjoy the pleasures of grilling, or follow the axial paths and sightlines that connect the garden to the magisterial Chicago skyline. The plant material’s varying heights create an unfolding experience from within the garden, and offer shadow and depth throughout the year when viewed from above. This green roof’s environmental benefits blend with a sophistication of design appropriate to a luxury amenity, to create a game-changing paradigm for what urban dwellers will come to expect.