Parque do Flamengo. Municipal tennis courts are rare in Rio, so the two near Flamengo Beach, both in good condition, are popular. The courts can't be booked, but a half-hour wait is likely to be rewarded. South of Parque Brigadeiro Eduardo Gomes, off Av. Infante D. Henrique, Flamengo, Rio de Janeiro, Rio de Janeiro, 20021–140. 021/2265–4990.