The former World War II civil defence communications centre and control room in Martin Munro Park in Cairns was built in early 1942 to provide a hardened headquarters for co-ordinating emergency services during air raids. It is located near the corner of Florence and Grafton Streets, at the south-east corner of the park.

The octagonal concrete building is now painted in scout colours and has eight scout badges painted on the exterior walls. Sitting on top of the concrete roof is a large fibreglass scout hat.

The front entrance to the former control room faces south-east towards Florence Street. Each of the eight walls measure approximately 3.9 metres long by 3.4 metres high and are off-form concrete 300mm thick. The five southern-most walls have had window openings created and fitted with steel louvres. There are sets of three air vents on six of the eight walls.

The interior contains one main room and two smaller rooms to the rear with a central corridor leading around the rear interior blast wall to the rear entrance. The interior walls are 150mm thick concrete. There is a 300mm square concrete post 2.5 metres inside the front entrance and there is evidence of the removal of a wall between the post and the eastern wall.