fashion of the times is self-made tours based on on-line advice and reviews, but the reality is that rio de janeiro is so complex, rich of options, and huge that some people say that the best way to truly explore the city in a time, safe, and cost effective way is via organized tours, or with the assistance of a professional guide - at least the first time.

in fact, aside from time and cost considerations, there are safety issues that must be taken into account - favelas are now much safer and incredibly interesting, but they remain a complex environment not easily understood by foreigners - so that a professional guide for these districts is not only suggested but highly recommended.

the many parks and peaks of rio de janeiro are rich in gorgeous flora and fauna, but a turn on the wrong trail can quickly lead to getting lost in the tropical rainforest - so a local hiking guide is also necessary, especially to assist in case of injury or emergency.