I do remember seeing one launch and after doing some other things seeing the same distinctive wing pattern something like an hour later. Not as well recognized among foreign tourists is the fact that tropical rain forest is all around. There are a number of preserves in and around the city. The most famous dates from Imperial times of dom Pedro II and has close associations with the days of the Imperial Court when Rio was the capital of both Brasil and Portugal. On the negative side, the country's chronic economic problems lead to severe funding problems.
Social problems add to risk for parks.
Many parks have poorly defined boundaries. I am pleased that this is changing, particularly the younger people, who now seem to understand and appreciate these natural wonders and seem interested in their protection. Darwin spent time here during the Beagle's voyage and commented on the variety. It has a number of waterfalls and vistas along with some of the old Imperial spots such as Alto da Boa Vista with its old church. It also includes some of the slopes of Corcovado.