Aracaju’s Centro sits on the Rio Sergipe, guarded from the ocean by a sandy barrier island, the Ilha de Santa Luzia. To the south, past the river mouth, are the city beach neighborhoods of Coroa do Meio, Jardim Atlantico (Praia dos Artistas) and Atalaia, collectively referred to as the orla (waterfront). Most of the action and nightlife is concentrated in these suburban neighborhoods.