The Duke of Edinburgh declared himself to be "the world's most experienced plaque unveiler" as he officially opened a school garden in County Durham.
Prince Philip made the trip to Langley Park Primary School in County Durham by helicopter and was greeted by cheering children and parents.
The Duke came to open the school's Royal Garden, which has been completed by pupils and volunteers.
After being given a tour he was asked to unveil a plaque, and turned to the children and said:
"Pay attention, you are about to see the world's most experienced plaque unveiler."
He was also presented with a book compiled by the children as well as a lamp, which he said would be useful to him in the dark.
The visit was arranged after a teacher at the school wrote to the Duke and asked if he would visit.
"It's a huge thing for the local area and the school to get someone from the royal family up here.
"The kids loved to see him and locals have come out to show their support so it's been fantastic."
More top news
He has agreed a two-year contract at St. James' Park and becomes the tenth new face in the Magpies' first team squad this summer.
On the back of three consecutive Championship wins, the Magpies sit fourth, poised to move into the automatic promotion places.
Callum Young, who will now be 23, was last seen on August 27 last year at his home in Hylton Road.