In 1939, Mona Vale was purchased by Tracy Gough, founder of Gough, Gough and Hamer (known today as Gough Group, one of New Zealand’s largest privately owned businesses). Keen horticulturalists, Tracy and first wife Julia employed the noted Canterbury landscape architect Alfred Buxton, to lay out the extensive gardens in the format they are enjoyed today. The lily pond was installed, a swimming pool added to the Bathhouse and Gough orchestrated the planting of the property in the rhododendrons, azaleas and exotic trees that give Mona Vale so much of its delightful character.