Silvestre is a region of
Rio de Janeiro
Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...
, but not officially recognized as a neighborhood.
References
Geography of Rio de Janeiro (city)
{{RiodeJaneiro-geo-stub