The tiny island, connected to the mainland by a causeway to Ilha das Cobras, was created as a customs house at the emperor’s request. However he deemed it too beautiful, and said that it should be used only for official parties. It's now a museum, linked with the Espaço Cultural da Marinha. The island is passed by the ferry to Niterói. Guided tours only. Boats leave Thu-Sun at 1pm, 2.30pm and 4pm.