King Charles and Queen Camilla visited the 9/11 Memorial in New York during their state visit to the United States. The royal couple laid flowers at the site, which honors the nearly 3,000 people killed in the September 11, 2001 attacks. The visit underscored the traditional diplomatic significance of a state visit, which typically includes ceremonial stops at nationally important landmarks and memorials. State visits by foreign leaders serve to strengthen bilateral relationships and demonstrate respect for the host nation's history and values. The timing and nature of the memorial visit reflect longstanding protocol for high-level international visits to the United States, where such stops at sites of historical tragedy are standard practice.