Casquets lighthouses per ton of ship when vessels passed the rocks and in turn he paid Trinity House 50 pounds per year for the right to run the lighthouses. The lighthouses reverted to Trinity House in 1785. They were converted to oil lamps with metal reflectors which were first used on 25 November 1790; and upgraded again with apparatus to rotate a beam of light in 1818. This had a clockwork mechanism which was wound up every hour and a half and gave one flash every 15 seconds. The lighthouses were badly damaged and the lanterns smashed in a severe storm on
Caloundra Lighthouses garden bed at the southern end. A sandstone block in this garden displays a plaque containing historical information about the lighthouses. To the east of the garden bed is a boulder set in a round concrete footing with a memorial plaque dedicated to World War II servicemen attached (erected 1991). With the exception of the memorial, none of the remainder of these elements is considered to be of state-level cultural heritage significance. It is the extent of the largely undeveloped site (part of the original lighthouse reserve) that is significant, rather than the elements that comprise the park. Caloundra Lighthouses