King Charles III has declared his "enduring solidarity with the American people", as he visited the 9/11 memorial in New York as part of a state visit focused on healing strained ties between Britain and the United States.
The four-day US tour, clouded by tensions over the Iran war, began in Washington with President Donald Trump warmly greeting the monarch and his wife Queen Camilla.
In New York, the royal couple laid a bouquet of white roses and a handwritten note at one of two reflecting pools that mark where the World Trade Centre once stood.
"We honour the memory of those who so tragically lost their lives on 11th September 2001," the note read, marking 25 years since the terror attacks that killed nearly 3,000 people.
"We stand in enduring solidarity with the American people in the face of their profound loss," it added.
They arrived in a convoy of black vehicles and were accompanied by businessman and former New York mayor Michael Bloomberg, who chairs the 9/11 Memorial & Museum.
'Greater together'
Charles ended his visit to New York by attending a star-studded gala at Christie's auction house, which focused on cultural ties across the Atlantic as well as the work of his youth charity, The King's Trust.
Guests included former Vogue editor Anna Wintour, singer Lionel Richie, and designers Donatella Versace and Stella McCartney.
At the reception, Charles said the bond between Britain and the United States is "a relationship rooted in shared creativity, enterprise and values, reminding us that we are truly greater together."
The British monarch also visited an urban sustainable farming project in Harlem.
