The nearest city to niagara falls?

The nearest city to Niagara Falls depends on which side of the border you're talking about:

* For Niagara Falls, New York (USA): The closest city is Niagara Falls, Ontario (Canada), located just across the border.

* For Niagara Falls, Ontario (Canada): The closest city is Niagara Falls, New York (USA), again just across the border.

It's essentially two cities with the same name, separated only by the Niagara River.