Out of a total of 25, which you can find at Ecosalon here. Some ones that pop out:
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The Green Carpet, Jaujac, France
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Moving Forest by NL Architects, Amsterdam, Netherlands
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Social Guerrilla Gardening, Southern California
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Skip Conversions by Oliver Bishop-Young, London, England
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Park(ing) Day, San Francisco, California
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Kensington Market, Toronto, Canada
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UPDATE: Will Doig in Salon makes the case against over-designed parks that accommodate everything but simple nature.
The “turf as rug” theme screams – dying (or temporary) grass! I don;t think turf can survive long on concrete or asphalt – or if it does, maintaining it (i.e. in hot weather) wouldn’t be sustainable.
As for the other examples of “container gardening” – I might rather see the plants in the ground and the steel and metal containers recycled for their materials (rather than leaching rust into the ground).