The most worthless thing one can do at Niagara Falls is merely stop and look at the falls.
If you don't get wet, you haven't gotten your time or money's worth out of your trip.
For those who don't know their way around this world wonder, here is a Niagara Falls primer.
Where exactly is Niagara Falls? There is a two-part answer to this question since there are the cities and the water.
First, the cities. Niagara Falls, N.Y., sits across the Niagara River from Niagara Falls, Ontario. Now, the water. Two islands separate Niagara Falls into three sections: American Falls, Bridal Veil Falls, and Canadian Horseshoe Falls. Bridal Veil Falls is a narrow slip of a waterfall, separated from sprawling American Falls by tiny Luna Island. Both are in New York State.