I fall between the two “No” options: in the end, went for “don’t have an interest to”. I’m British, and have never been to the Americas (lack of funds, not of desire). Getting there now, late in life, would require coming unexpectedly into a very large sum of money. While I would find Niagara interesting; I’d have a lot of higher priorities in North America.
Hamburg’s on the American side 
Slight highjack — near the ferris wheel and Harley shop (clothing and gifts only) on the Canadian side was a terrific steak place whose name escapes me. If we ever visit again it will be as much for the food there as the falls.