
Britain's King Charles III poses for a portrait in Buckingham Palace's Throne Room dressed in full regalia. He is wearing the Robe of Estate and the Imperial State Crown while holding the Sovereign's Orb and the Sovereign's Sceptre with Cross.

A storefront window in London is decorated with framed photographs and a painting of the King on Thursday.

Westminster staff and police take cover from the rain on Friday.

The King meets well-wishers outside Buckingham Palace during a walkabout on Friday.

A royal fan sleeps along the procession route on Friday.

People travel into London on Saturday to be a part of the historic day.

Preparations are made on the balcony of Buckingham Palace.

A child has paint applied to his face while waiting for the procession.

Members of the Coldstream Guards march on the procession route before the coronation.

People gather to watch the procession. Showers moved through London on Friday and more rain was expected for Saturday.

People wait on the procession route ahead of the coronation.

Troops march in London ahead of the coronation ceremony.

The King's carriage leaves Buckingham Palace before the coronation.

Order-of-service booklets are seen at Westminster Abbey as guests arrive for the coronation.

Members of the public look out onto Parliament Square ahead of the coronation.

Police officers detain a protester ahead of the King's procession. Several arrests were made Saturday as protesters gathered near the procession route.

A boy watches guards march on the streets in front of Big Ben.

The King and Queen travel in the Diamond Jubilee State Coach as they make their short journey from Buckingham Palace to Westminster Abbey.

People line the procession route in London.

Jill Biden, first lady of the United States, arrives at Westminster Abbey. Biden, who led the US delegation, traveled with her granddaughter Finnegan Biden.

The procession takes place in London before the coronation.

Singer Katy Perry takes a selfie with guests at Westminster Abbey. The coronation guests included celebrities and world leaders.

Royal Navy sailors stand at attention on the Mall in London.

Musicians perform at Westminster Abbey before the coronation ceremony.

Singer Lionel Richie poses for a selfie at Westminster Abbey.

Prince George, second from left, stands with other pages of honor at Westminster Abbey.

Prince Harry, right, arrives at Westminster Abbey along with Princess Beatrice, one of the King's nieces, and her husband, Edoardo Mapelli Mozzi. Harry accepted the invitation to his father's coronation but was without his wife, Meghan, who stayed back in California with the couple's two children.

The King and Queen travel to Westminstger Abbey in the Diamond Jubilee State Coach.

The King is seen near his grandson Prince George, one of his pages of honor.

Prince Harry enters Westminster Abbey.

Former British prime ministers Tony Blair, Gordon Brown, David Cameron, Theresa May, Boris Johnson and Liz Truss sit with their partners.

Prince Louis and Princess Charlotte, two of the King's grandchildren, arrive for the coronation.

Prince William, Harry's brother, and Catherine, the Princess of Wales, arrive for the coronation with Prince Louis and Princess Charlotte.

The King enters Westminster Abbey for his coronation.

The King arrives at Westminster Abbey for his coronation.

People watch the ceremony on a screen in Hyde Park.

The King and Queen entered the Abbey to the strains of "I was glad," the stirring coronation anthem written by Hubert Parry for the coronation of King Edward VII in 1902. It has been sung at all coronations since then.

The King and Queen take part in the coronation ceremony.

Prince Harry looks around Westminster Abbey from his spot in the third row. He is a non-working royal and did not perform any duties during the ceremony.

An anointing screen is erected for King Charles III at the coronation ceremony. The most sacred part of the service — the anointing — took place behind the screen.

The King places his hands on the Coronation Bible as he takes the Coronation Oath.

Guests watch the coronation ceremony at Westminster Abbey.

The St. Edward's Crown is carried inside Westminster Abbey.

The King holds a sword during the ceremony.

Prince Louis points out something to his sister, Princess Charlotte, during the ceremony. They are flanked by their parents, Prince William and Catherine, the Princess of Wales.

The Archbishop of Canterbury Justin Welby places the St. Edward's Crown onto the head of the King.

Royal fan Ben Weller reacts as he watches the coronation on a screen in London's Hyde Park.

This was the only time Charles will ever wear St. Edward's Crown, as it is reserved for the coronation of a new monarch.

The King wears the St. Edward's Crown during his coronation.

The King's son Prince William, the heir apparent to the throne, kisses his father on the cheek during the ceremony.

British lawmaker Penny Mordaunt carries the Sword of State during the coronation. She was involved in the ceremony because as the current Leader of the House of Commons, she is also the Lord President of the Privy Council — a body formed of senior politicians who act as the monarch's official advisers.

People in London's Piccadilly Circus walk past a giant screen showing an image of the King during the coronation ceremony.

The Queen receives her own coronation. She wore the Queen Mary's Crown.

Charles and Camilla walk out of Westminster Abbey.

The King greets multifaith leaders on his way out of Westminster Abbey.

The Queen walks toward the Gold State Coach after leaving Westminster Abbey.

Prince Harry leaves Westminster Abbey after the ceremony. He did not join members of his family to ride in an impressive procession back to the palace. Instead, he got into a car alone and departed the abbey shortly after the service had ended.

Troops march in London for the King's coronation. On their way back to Buckingham Palace, the King and Queen were accompanied by a huge parade of soldiers, musicians and horses.

The King and Queen travel to Buckingham Palace in the Gold State Coach after the ceremony at Westminster Abbey.