Site visited in March 2020. As Walter described all the aspects of the site I would focus more on practical issues.

It is a nice place, fully deserved to be on the list. Currently working hours of the place are quite difficult for visitors. It is not open on holidays nor on Sundays (Mondays either but that is more understandable). All individual visits have to be arranged in advance and there is only one English-speaking guide on the place. You can arrange the visit through their website:

Site: http://portal.iphan.gov.br/srbm

Facebook: https://www.facebook.com/SitioBurleMarx.Iphan/

e-mail: visitas.srbm@iphan.gov.br

Official leaflet says that the visits can take place only twice a day - at 9.30 and at 13.30 - tours up to 35 people but during my visit there were other groups that started a bit later than 9.30. Visit costs 10 R$, paid by cash only. Have in mind that Sitio is similar to any other botanical garden with its ponds and water so there are plenty of mosqitos (and other flying and biting creatures) there - be prepared with appropriate repelent.

It is possible to reach the place by public transport. The best way to get to the Sítio from central Riois to take the subway line until "Jardim Oceanico" station, and them take the "Rapid Transit Bus" (BRT in portuguese) until "Ilha de Guaratiba" station. After that, in Ilha de Guaratiba Station you can take another bus that leave you at the gates of the Sítio.

Another option is from Jardim Oceanico station, you can take the BRT until "Recreio Shopping" station and then take an Uber to the Sítio or take Uber from any other place in Rio.

As Sitio is located less than 2 km from Ilha de Guaratiba station you can also walk from there (which I did). As I stayed in the hotel located close to Avenida das Americas (at Barra da Tijuca) I took the bus until Recreio Shopping (do not confuse with Terminal Recreio) and than changed for normal bus going to Terminal Santa Cruz - take normal bus - not express bus as express ones are not servicing all bus stops. From Ilha de Guaratiba go south on Estr. Roberto Burle Marx, the site will be on the left after some 20 minutes of walking. From Ilha de Guaratiba there are brown road signs to Sitio Roberto Burle Marx.

Allow at least 2 - 2,5 hours to get to the Sitio from central Rio, it is quite far and some two - three to visit the place.