Avenida 9 de Julho, avenue in São Paulo, Brazil
Avenida 9 de Julho is a major boulevard in central São Paulo that connects different neighborhoods and passes over underground rivers and streams. The avenue stretches for several kilometers and is lined with multistory buildings ranging from art deco details to modern concrete and glass facades, with constant traffic flow during the day.
Construction began in 1929 and the avenue opened in 1941 as part of a plan to improve urban infrastructure and connect distant neighborhoods. The name honors the Constitutional Revolution of 1932, a resistance movement by the state of São Paulo against the federal government that became a state holiday.
The avenue is accessible via metro stations Trianon-MASP and Brigadeiro on Line 2, or by buses serving different parts of the city. The area feels safe and walkable during daytime, with restaurants and cultural venues nearby; exercise caution in sections closer to the city center after dark.
The tunnel beneath the avenue, built in the 1930s, was the first engineering project of its kind in Brazil and still connects different neighborhoods underground today. The passage also routes over hidden rivers like the Rio Saracura, which flows in subterranean galleries beneath the city.
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