Question: what to do iguazu falls?
Answer: The Falls. For your first view of the falls, walk to the Argentine side of the Iguazú National park and stroll along the lower Circuit. ... 
Full day Brazil side and Macuco Trail. ... 
Half day Gran Aventura. ... 
Helicopter ride. ... 
Iguazu Forest Adventure. ... 
Jesuit Ruins and Wanda Mines. ... 
Parque de Aves.