Final answer:
The Iguazu Falls are a popular and revered tourist destination known for being one of the most impressive natural wonders on Earth.
Step-by-step explanation:
The Iguazu Falls, which lie on the border between Argentina and Brazil, are a popular and revered tourist destination. The waterfalls have been visited by people from all over the world for over a century, and they are often cited as one of the most impressive natural wonders on Earth.