Its trigonometrical station lies on the border between the Australian Capital Territory and New South Wales, Australia.

North and east of One Tree Hill, the border is formed by the watershed of the Molonglo River catchment.

One-Tree Trigonometrical Station is nominated in the description of the Australian Capital Territory, in the Second Schedule of the Seat of Government Acceptance Act 1909.

[7] It was the location at which Charles Scrivener began his detailed topographical survey of the area for the new capital site of Canberra.

[7] One Tree Hill is a popular walking destination and lies on the Canberra Centenary Trail.