Only the substantial concrete foundation of the Quarantine trig station at North Head remains, near the North Head Close Defence Observation Post.
The name plate is still attached to the vase, but there’s no mast or vanes.
There’s sweeping ocean views from the track up to the trig.
Getting to Quarantine trig
The Quarantine trig is just behind the North Head Close Defence Observation Post, which can be reached from the Avenue of Honour, or from North Fort Road.