Hello how may I help you? Yes, where is the tallest indoor waterfall located? The tallest indoor waterfall is located in Tanzania Oh wow, how tall is it? It is an amazing 111 feet tall! WOW! where is the tallest waterfall? The tallest waterfall is in Niagara Falls Oh, that one I know. How tall is it? It is 200 feet! WOW! you have been most helpful Thanks, I try to be