Botafogo and Flamengo are fine and picturesque for an afternoon stroll, but too polluted for swimming. Off by itself in Urca, Praia Vermelha faces the ocean and is often fine. It offers a fabulous view of the Sugarloaf, and next to no tourists. On the other hand, it's completely lacking in waves. The first of the ocean beaches, Copacabana remains a favorite. The wide and beautifully landscaped Avenida Atlantica is a great place for a stroll.