27/10/2026
💡🏠 Charles Fort Lighthouse. 💡🏠
One of the most commented upon sights for visitors to Charles Fort, be they children or adults, is the onsite Lighthouse. It stands at 18 metres above the Mean High Water Mark and is a fascinating building in terms of its history, design, construction and technology.
Although strictly speaking a Directional Light rather than a Lighthouse, operating under the care of Cork County Council and the Commissioners of Irish Lights, it is the latest incarnation of similar buildings located in this area.
In 1665, King Charles II, whom the fort is named after, issued Letters of Patent to Sir Robert Reading to build 6 lighthouses on the Irish coast. One of these was at Barry Og’s Castle which stood where Charles Fort is now. This would probably have been a stone structure with a coal fire on its roof. By 1810 all lighthouses in Ireland, including at Charles Fort, were transferred to the management of a body known The Corporation for Preserving and Improving the Port of Dublin but more commonly called The Ballast Board.
The present Lighthouse was built in 1929. As a structure, it has touches of the Art Deco style popular at the time. It was installed onsite in April 1929 and used Acetylene to power the lights. It was converted first to Propane in 1980 and finally, to electricity in 2004.
It was built by the famous Chance Brothers Glassworks, situated in the Midlands Industrial heartlands of England. This company continues to trade as a manufacturer of specialized glass products. James Timmins Chance was the first to place lighthouse lamps inside a cage containing reflective lenses (called optics). This accentuated the available light making the lamps more effective over greater distances. Among the places fitted with Chance Glass products are Big Ben in Westminster, the 1851 Crystal Palace and Chatsworth Estate. Among Chance Brothers other innovations were Ultraviolet blocking Glass and Cathode-ray tubes.
Standing proudly above the Governors’ House (reputed to be the residence of The White Lady), and recently re-painted, the Lighthouse is a distinctive and historic structure when viewed from land and a valuable safety aid to those using the harbour.
📝 Text: Charles Fort Guides - Finian O'Connor and Noel Dwyer.
📸 Images: Charles Fort Guides.