state reserves include the reserva biológica e arqueológica de guaratiba, which is actually located within rio de janeiro's metropolitan limits, and the reserves of praia do sul in ilha grande, and de araras in petrópolis.

the 3 federal biological reserves located in rio de janeiro state are de tinguá in nova iguaçu, poço das antas  in silva jardim / casimiro de abreu, and união in casimiro de abreu / macaé / rio das ostras.

with some planning and the right reasons to do so, visitors in rio are able to get access to these incredible areas.   for the reserves located in rio, theinstitudo estadual do ambiente  (inea), posts an orientation and instructions on how to get access on this page, to help visitors explore these protected areas, including a link to the document to be filled out and submitted (documentos para solicitação de autorização de pesquisa).