In August 2013, we ended our 4 month trip to South America in Buenos Aires.  We rented an apartment there for two weeks and during that time we took a bus trip to Puerto Iguazú in order to see Iguazú Falls.  This is really a collection of approximately 275 discreet waterfalls that straddle the border between Argentina and Brazil.  Iguazú Falls are considered to be among the most beautiful and largest in the world.  They stretch out over an area 1.7 miles long so it’s difficult to take it all in but you can experience the beauty of these falls from many vantage points.

https://coopsecondact.com/2013/08/10/cataratas-del-iguaz/

While in Puerto Iguazú, you can easily check out Tres Fronteras which provides a view of three  countries at the confluence of two great rivers.

https://coopsecondact.com/2013/08/11/tres-fronteras/