Tigre Delta Day Trip from Buenos Aires. An easy day trip from Buenos Aires, the Tigre Delta is a unique suburb built around the swampy land and meandering waterways that empty from the Rio Paraná into the Rio de la Plata. Former Argentine president Domingo Sarmiento encouraged settlement in the area during the mid-1800s and lived there himself for nearly three decades. Book and Save 33%! Tigre Delta Day Trip from Buenos Aires.