The Argentinian and Uruguayan tradition of the Tango, now familiar around the world, was developed by the urban lower classes in Buenos Aires and Montevideo in the Rio de la Plata basin.

UNESCO: Culture

Wedged on a narrow spit of land near the marshy flatlands of the Rio de la Plata, the abandoned docklands had no streets, a few gutted buildings and "chest-high grass, " Austin Hearst, an early investor, remembers.

WSJ: Alan Faena's Argentine Residence

Punta del Este, an hour and a half from Montevideo, has condominiums and high rises lining the beaches that reach out into the water, with the Rio de la Plata on one side and the Atlantic Ocean on the other.

BBC: Living in: Uruguay

Macri said Wednesday that the only solution is for the constantly warring governments to work together on expensive and long-term public works projects, creating huge underground drainage pipes to carry increasingly common torrential rains out to the Rio de la Plata.

NPR: Argentina: Flooding From Torrential Rains Kill 52