"The purpose of the working party is to address this issue.
"The feeling was that if this money has to be spend, then itd make sense to look at improving the overall look and feel of the castle to make it more user-friendly while appealing for young children at the same time," he said.
Mr Chandulal-Mackay and two youth councillors met with local schoolchildren to see what they liked and disliked about the castle and what improvements they would recommend.
"We went to St Johns Primary School, Whanganui Intermediate School and Tawhero School. Everything from the sensible and do-able to the weird and wild was suggested."
These suggestions were then passed to Alex Falkner, who has been with Weta Workshops for some time and worked on films such as The Hobbit, Lord of the Rings and Avatar.
Mr Faulkner is now living in Whanganui and was interested in undertaking some concept designs, which he presented to the working party last month.
Mr Chandulal-Mackay said it was too early to release those designs, but they featured things such as thrones, tunnels and climbing frames.
The idea is to make the castle far more interactive.
The parks and reserves team will engage a building engineer to undertake a closer structural assessment to see where the priorities are. Obviously, with the 10-year plan process under way, were trying to work within that timeframe.
He said as the Lions and Rotary clubs had long-term involvement in Kowhai Park, the working party was keen to see them involved.
"We want it to be as involving of the community as possible."