The King and Queen Camilla laughed as they struggled to cut a cake with a sword at the Eden Project in Cornwall.
The royal couple paid a visit to the attraction to mark its 25th anniversary on Tuesday (24 March).
After touring parts of the Cornish ecological centre, the couple attempted to slice a Victoria sponge using a sword presented to them by Colonel Sir Edward Bolitho, Lord Lieutenant of Cornwall.
They could be seen laughing as they struggled to cut through a row of houses on the street-party themed cake, which was designed by charity The Big Lunch.