sustainable design exterior shot create a serene urban landscape scene featuring a lively bio retention swale illustrate a bustling street with trees and verdant multi layered vegetation in lush shades of green show a sleek modern car parked on a charcoal gray asphalt road the bio retention area should be filled with vibrant colorful plant life rich in deep greens and warm browns illustrate the layered ground with clear distinctions a light brown mulch layer golden brown bio retention soil and a sturdy gray gravel base above a silver perforated pipe include soft sunlight filtering through the foliage casting gentle shadows and create an inviting atmosphere with people casually strolling down a light gray sidewalk architecture