Brimbank Park is a state park managed by Parks Victoria situated in the north-western Melbourne suburb of Keilor East, Victoria, Australia. (Melway ref: 15 A10). Entry is via Keilor Park Drive which is off the Western Ring Road. In 1976 Brimbank Park was opened as part of the Maribyrnong Valley Park, combined with the adjacent Horseshoe Bend Children's farm and Greenvale Reservoir Park. The Maribyrnong River has hollowed out a valley some 55 metres below the Keilor Plain, with a steep bank on the northern side and gentle terraces on the southern side forming a huge amphitheatre.