The Prince and Princess of Wales will soon welcome Donald Trump and US First Lady Melania Trump to Windsor Castle for the start of their state visit.
The King and Queen will join them for a carriage procession through the Windsor estate, before a flypast later on.
Trump arrived in London last night and stayed at Winfield House in London, a 35-room mansion, it is the US ambassador's residence.
This visit will see royal pageantry, trade talks and international politics.
The Household Cavalry Mounted Regiment will escort the procession.
The route will be lined by members of the British armed forces, and both the US and British anthems will be played.
Once at the castle, a guard of honour will greet the party, who the King will invite Trump to join him in inspecting.
There will also be a flypast by UK and US F-35 military jets and the Red Arrows.
Following a state lunch, the president will pay his respects to the late Queen in private before a short tour of St George's Chapel.
That evening, a traditional state banquet will be held at the castle, during which both the King and president will deliver speeches.
