The Park is located in the westernmost
region of the state of Paraná, in the Iguaçú river basin, 17 km from
downtown Foz do Iguaçú. It borders Argentina, where the Iguazu National Park,
which was implemented in 1934, is located. The border between the two countries
and their national parks is made by the Iguaçú river, whose source is near the
Serra (mountain range) do Mar near Curitiba and runs for 18 km throughout
the state of Paraná. The river estuary is located 18 km downriver from the
Falls, where it flows into the Paraná river. This meeting of rivers forms the
triple
