Today offers an optional trip to Corcovado mountain. This tour takes you on board a steep rack-and-pinion railway which glides up through tropical Tijuca National Park, the largest urban forest in the world dripping with fruit and flowers, to reach the summit of Corcovado. Here the famous 40m art deco Christ the Redeemer statue soars above the city, arms outspread benevolently. On a clear day the views over the city and out across the ocean and outlying islands are stupendous. (This is included for all 2018 tours).
Another popular optional excursion is to the Botanical Gardens. Walk along the splendid Avenue of the Royal Palms, and see if you can catch a glimpse of the toucans and marmosets that frequent the park, attracted by thousands of species of tropical and subtropical plants. There are also glass houses sheltering bromeliads and a research institute here.
You might take a drive through old Rio, the arty Santa Teresa district, where colonial houses in pastel hues line the winding, cobbled streets. Football fans might want to travel to the north of the city to visit the Maracanã stadium. Depending on fixtures you might even be able to join the raucous crowds on the terraces.