Holly Hill Park is situated on the eastern banks of the River Hamble, north of Warsash. The land is now owned by the council but was once the gardens of a long-lost mansion. As part of this, the mansion the grounds were landscaped, the stream was dammed to form a large lake and further damming was done to create a series of terraced lakes within the valley, rocky outcrops, cascades, and a grotto were made by Pulham Company. They made artificial rocky outcrops with their ‘Pulhamite’ mixture of Portland stone and cement poured over rubble, and individually moulded into shape. {date around 1870} A sunken garden was added in 1936 on the site of a large glasshouse. The building suffered from neglect and was eventually demolished. Fareham Borough Council purchased Holly Hill in 1954.