What was once a dingy room of junk is now home to more than a dozen dance and drama workshops.
The Dominic Barber Studio - named after The Castles first theatre director - brings new, much-needed facilities to the theatre.
The Castle's artistic director, Bart Lee, says the studio will affect all their work: "Professional performing companies can come in and do workshops. We can have dance companies doing classes before the show. And our participatory programme now has a home that is fully equipped."
|Warming up in a musical theatre workshop|
One of the groups on the 'participatory programme' is The Castle Youth Theatre. Pip Miller is a member of the Youth Theatre and says the new studio space will bring 'new life' to the group: "We used to use a dingy room. There are mirrors as well, so you can watch what you're doing. Normally you don't know if you look like a plank or not, but the mirrors will help us out."
The Castle has around 21 groups, around half of which will use the new space.
The project cost more than £100,000 and was funded by the arts council, local authorities, the Friends of The Castle and donations from the public.