Today, we take you on an adventure to subtropical South America to visit one of the wonders of Argentina and Brazil in our program titled “The Astounding Falls of the Iguazu River.” The Iguazu River and its unmistakable cataract falls are the natural territorial boundary between Argentina and Brazil, making it one of the most spectacular international borders in the world. Visited by over a million tourists every year, the Iguazu Falls are ranked as the most popular natural attraction in both countries. In 1934, Iguazu was declared a national park of Argentina, and five years later, Iguaçu National Park was established on the Brazilian side. Approximately 50 years after this, both reserves were listed as World Heritage Sites by the United Nations Educational, Scientific and Cultural Organization (UNESCO). Unfortunately, human activity is taking a toll on the Iguazu region. The Iguazu region is a place of astounding yet fragile beauty, and we sincerely thank all governments, organizations, and individuals working to safeguard the falls of the Iguazu River and the amazing life that surround them.