It's not hard to imagine these bioretention planters in most urban streets - treating polluted road runoff naturally whilst greening the city.
Introducing Philadelphia’s New Green Streets Design Manual
Stormwater planter, from the Green Streets Design Manual
Deaderick Street :: Nashville, TN Bioswales, medians, sidewalk planters and pervious concrete pavement over structural soils divert 1.2 million gallons of stormwater from going into the Cumberland River
drivable grass pavers and sod for a green parking lot
Alison Brooks Architects _ North West Cambridge Development _ Rendering Green Street
Guerrilla gardening. Pavement-to-parks. Open streets. These are all urban interventions of a sort – quick, often temporary, cheap projects that aim to make a small part of a city more lively or enjoyable