Few people driving the ramps of the parking deck at Rush and Walton Streets know of its verdant green roof. Visible from surrounding office and residential towers, the 16,000 square foot green roof features five planting mixes in an irregular grid pattern. Plantings include Stonecrop, sedum, chive, feather reed grass. The roof is adjacent to the accessible green roof designed for those living in the Residences at 900 North Michigan Avenue.