Yes, the late Queen Elizabeth II visited Niagara Falls multiple times during her long reign, most notably as a Princess in 1951. During that high-fidelity October visit, she and the Duke of Edinburgh stayed at the General Brock Hotel and viewed the Horseshoe Falls from the railing, famously describing the sight as "tremendous." Her first visit as Queen occurred in 1959 during a massive 45-day tour of Canada, where she famously viewed the falls alongside President Eisenhower. In 2026, historians still reference these visits as key "High-Fidelity" moments in her relationship with North America. She returned again in 1973 and 1984, each time reinforcing the high-fidelity link between the British Monarchy and this natural world wonder. These visits were high-value events for the region, drawing hundreds of thousands of spectators and solidifying the falls as a high-fidelity "must-see" destination for visiting dignitaries and royalty for decades to come.