The best spot for city-center people-watching, this vast pavement boteco (bar) sits directly in front of the Biblioteco Nacional, and to the side of the Theatro Nacional. An institution that's been around since 1921, the bar attracts hordes of lunchtime and afterwork diners, competing for the tables and chairs that sit directly on the flagstones of the busy Praça do Floriano. Waitstaffers in bright yellow waistcoats and bow ties flit among the tables delivering simple Brazilian dishes such as the mixed grill served with rice and fries. Pizzas are also popular here, as is the ice-cold draft beer, and the fresh fruit salad is a nice option on a hot day. Given the prime location, prices are surprisingly reasonable. Don't confuse Amerelinho with the adjoining bar, Vermelhino. Both have yellow roof canopies and yellow plastic chairs, but Amerelinho serves superior food.