Living Root Bridges in Cherrapunji, India
The Ficus elastica tree of India produces a series of secondary roots from higher up its trunk, and grows along river ganks. The Khasis people have learned to meticulously manipulate and form these roots into a living bridge, which actually grows stronger over time. Some of these bridges are over a hundred feet long and can support the weight of 50 men.
This greenery is certainly not urban, but it is a prime example of the ideal of which this blogger is fanatic: the utilization of nature to co-exist with Human habitats in a symbiotic relationship. I call it Eco-cooperation, and it is the greatest!
I wonder if anyone could suceed in growing these trees and create the same result in an urban setting.