A solid sandstone tower with connected watch keepers quarters built in the early 1840s and designed by the Colonial Architect Mortimer Lewis. The tower is octagonal in plan having four levels and a basement store cut 10 feet into a solid rock. The topmost level has a cantilevered iron and timber catwalk and the metal pitched roof is surmounted by an observation fleche. Decoration is minimal but the form of the shaft with simple stepping, string courses and small panel oval and square windows is typical of restrained Colonial Georgian building work. The wing for staff quarters in an "I" plan with enclosed verandahs either side. This building probably s building having very good ashlar work to external walls with each elevation recessed within a frame of foundation, eaves and quoin mouldings. Windows are marked by simple classical sill and lintel mouldings. The hipped roofs originally of slate are now sheeted in asbestos cement. A good timber picket fence encloses the property which is in good condition and well maintained.