President Trump and first lady Melania Trump will spend the majority of Wednesday at Windsor Castle in the United Kingdom.
They were greeted upon arrival by Prince William and Kate, the princess of Wales, as well as King Charles III and Queen Camilla.
The trip marks Trump's second state visit to the UK since returning to the Oval Office in January. The president last met with British Prime Minister Keir Starmer in July at his Turnberry golf course in Scotland to discuss trade and the crisis in Gaza.
The president and first lady are also expected to visit St. George's Chapel to participate in a wreath-laying ceremony at the tomb of Queen Elizabeth II and join a state dinner later in the day, among other events.
Watch the live video above.