The day is designed to show how the Castle is fulfilling its commitments to Wellingborough and Northamptonshire.
A spokesman for The Castle said: "We want to encourage everyone to come along whether they are a regular visitor to The Castle or just curious.
"There will be lots on offer, including trips and tours of the building and backstage, taster workshops, demonstrations, rehearsals in progress and outdoor activities.
"We are looking forward to hearing the public's thoughts and enjoying a great day."
For further details visit
www.thecastle.org.uk.
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