The Rio de Janeiro Botanical Garden is a worth-visiting magnificent 137-hec (338-acre) garden over 200 years old featuring a 750-meter (half-mile) avenue of 134 impressive royal palms and more than 7000 types of plants.
There you can see orchids, bromeliads, cacti, huge bamboos, and carnivorous plants, among many others. The most famous one is Victoria, a huge water-lilly floating on the water that is capable of sustaining a 5-year old kid on it! (not included)
Monkeys are sometimes visible during the visit, and there are always plenty of birds flying over the trees (the more recognizable ones are toucans).
Duration: 4 hours