Go to Praia Vermelha (Red Beach) (Rio).
Visit Parque Lage (Rio).
Take the cable car to the top of the Sugarloaf. Stay until dark. Look at the view. (Rio).
Go and see the Marmosets on the Cláudio Coutinho Trail at the foot of Sugar Loaf and next to Praia Vermelha.
Wander around the district of Urca (Rio).
Visit the Botanical Gradens (Rio).
Visit the MAC (Museu de Arte Contemporânea) (Contemporary Art Museum) whilst in Niterói.
A day trip to Niterói, across the bay from Rio.