Just to the North of Western Avenue in Cardiff, the park has mature trees that run along the edge of the River Taff which sit very nicely with the more recently planted ones. Its proximity to the River Taff ensures that the park is rich in wildlife. The Friends group has worked hard to achieve greater biodiversity.

Hailey Park contains a large area of sports pitches – like rugby, football, touch rugby and baseball and it is home to Llandaff North Rugby Club with pitches on the park for matches and training while their clubhouse is in nearby Radyr Road. Other facilities include tennis courts and playgrounds, the park has the longest legal graffiti wall in Wales.