The 27ha restoration project was brought forward by Ipswich Borough Council and received a £2.8m National Lottery grant through the Heritage Lottery Fund (HLF) and the Big Lottery Fund.
Holywells Park first opened to the public in 1936, and features a Grade II listed Orangery, which has now been fully reinstated. LDA Design's transformation has also introduced new features including a café in the restored Stable Block, paved performance area, terraced seating, upgraded entrances and a kiosk alongside the play area.
The rolling landscape now has the addition of a newly planted maze beside the Orangery, a restored historic pond network (painted by Gainsborough) and restored formal, terraced gardens.
Andrew Cottage, associate at LDA Design, said: "Our design placed great emphasis on improving the quality of life, play and recreation for the communities around Holywells Park. We worked hard to restore the historic features of the park as well as creating a richer horticultural and ecological experience."
Inga Grimsey, Chair of the HLF Committee for the East of England, said: "Investing in our beautiful parks and open spaces is vital not only for the future of our natural heritage, but also for our health, communities and sense of identity. Thanks to the National Lottery, Holywells Park can now be firmly at the heart of Ipswich – as a place to work, perform, play and enhance well-being – for generations to come. Huge congratulations to everyone involved."