What is a question about this article? If the question is unanswerable, say "unanswerable".

After a visit to Brasília, the French writer Simone de Beauvoir complained that all of its superquadras exuded "the same air of elegant monotony," and other observers have equated the city's large open lawns, plazas, and fields to wastelands. As the city has matured, some of these have gained adornments, and many have been improved by landscaping, giving some observers a sense of "humanized" spaciousness. Although not fully accomplished, the "Brasília utopia" has produced a city of relatively high quality of life, in which the citizens live in forested areas with sporting and leisure structure (the superquadras) flanked by small commercial areas, bookstores and cafes; the city is famous for its cuisine and efficiency of transit.

What have other observers compared forested areas to?
unanswerable