During the coronation on May 6, Charles and Camilla traveled in what’s known as The Coronation Procession from Buckingham Palace to Westminster Abbey, which has been the setting for the sovereign’s coronation since 1066. It’s there that Charles, 74, is taking the coronation oath and being crowned king.

In September, Charles ascended to the throne immediately after serving as heir apparent for 70 years, the longest in British history. 

“The death of my beloved Mother, Her Majesty The Queen, is a moment of the greatest sadness for me and all members of my family,” he wrote in a statement at the time. “My family and I will be comforted and sustained by our knowledge of the respect and deep affection in which The Queen was so widely held.”

Elizabeth’s eldest son has continued to honor her memory through his official portraits as king and even the invitation to his coronation, the first in British history since hers in 1953.