Smeaton's Tower Smeaton's Tower Smeaton's Tower is a memorial to celebrated civil engineer John Smeaton, designer of the third and most notable Eddystone Lighthouse. A major step forward in lighthouse design, Smeaton's structure was in use from 1759 to 1877, until erosion of the ledge it was built upon forced new construction. The tower was largely dismantled and rebuilt on Plymouth Hoe in Plymouth, Devon, where it stands today. The Royal Society recommended Smeaton for the task, and he modelled the lighthouse on an oak tree. He rediscovered the use of hydraulic lime, a form of concrete used in Roman times. The
Sept-Îles lighthouse Sept-Îles lighthouse The Sept-Îles lighthouse is an active lighthouse in Perros-Guirec, (Côtes-d'Armor) France, located on the "Île aux moines", an island of the Sept-Îles archipelago in the English Channel. The island is accessible but the lighthouse is closed to the public. The first lighthouse, a round tower, was illuminated in May 1835, and then replaced in 1854 by a square tower 16 ft (5 m) taller. Destroyed 4 August 1944, it was rebuilt in 1949 and relit July 1952. From 1957 onward, it has the used wind for electric power. The wind turbine is the most powerful in service of