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Although the idea of a rooftop garden is not new, it is becoming
a solution for both architects and city planners in addressing
sustainability concerns. Their popularity is not just new buildings,
but old buildings as well, the greening of the City Hall roof
in Chicago a good example of the latter. In these "green"
instances, practical issues (weight, irrigation, drainage, etc.)
tend to take precedence over design. When accessible and highly
visible, though, a rooftop's design should ideally synthesize
the architecture with the raised landscape - and vice-versa -
to create a satisfying environment that becomes an oasis in the
city.
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