Prince Edward and Sophie Countess of Wessex met schoolchildren outside the castle who were waving flags in their honour.
The Earl and Countess of Wessex were then taken on a tour of the castle, meeting the stone sculptor, and chatting with embroiderers doing embroidery work.
They visited the police museum in the castle and chatted with members of staff, police cadets and Lancashire Police and Crime Commissioner Andrew Snowden.
Before they left they enjoyed refreshments in the cafe at the castle.
13. Looking down from the gallery
Looking down at the police museum from the gallery which used to be part of the prison at the castle. Picture by Dan Martino. Photo: Dan Martino
14. Chatting in the cafe
Sophie Countess of Wessex chatting in the cafe at the castle. Picture by Dan Martino. Photo: Dan Martino
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