Jardim Botânico do Rio de Janeiro is one of the prettiest and most well-preserved green areas in the city. It will give you a pretty good idea of the biodiversity you will find in Brazil, and it's less than 10 minutes away from your hotel. It features about 6,500 different plants, including many endangered species. There are many monuments of artistic and historical importance. Here you will also find the largest library in Brazil specialized in Botany.