Foz do Iguaçu or Lençóis Maranhenses? Anyone been to either of these? Can't do both in one trip unfortunately.
Been to Foz. 3 days is enough to see both sides of the falls, the dam and bird park. Would go to Lençois instead if I had more time. I think its more enjoyable though the falls are beautiful. Search for the right time to visit so you get the lagoons filled with water though.