The first European to discover the falls was, Spanish Conquistador Cabeza de Vaca in 1541 The falls on the Argentine side are named after him. One of the Argentine falls is named after Boselli who rediscovered the falls at the end of the 19th century.
Iguazu Falls are waterfalls of the Iguazu River located on the border of the Brazilian state of Parana and the Argentine province of Misiones. The falls divide the river into the upper and lower Iguazu.

Their name comes from native words meaning big water. The legend goes that a God wanted to marry a girl from the area named Naipi, who refused and ran away with her true love in a canoe. In anger and rage, the God divided the river, creating the falls, leaving the lovers to fall forever.