Watch full movie online. NIAGARA FALLS is more than the celebration of a natural wonder: it's a study of human achievement and human folly on an epic scale. It is a tale of exploitation and preservation and the changing nature of love in America - of the way Man has related to Nature over centuries. With spectacular high definition videography, the camera takes us to the edge of the falls via helicopter and boat; we see newsreel footage, actual weddings and much more