Patrick Blanc's vertical gardens have made the name of this French scientist come artist. Green roofs Australia have a post on his work that includes a YouTube video interview with Blanc in Paris worth watching.
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Marche des Halles in Avignon
These images I found on the always intriguing Saint Verde blog. Take a peek at theis post of his...and more. His references are exccedingly eclectic and very often quite unique. From there I went to Blanc's website and was enraptured with certain travel and project images.