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
La Rocchetta Lighthouse La Rocchetta Lighthouse La Rocchetta Lighthouse () is an active lighthouse located on the southern part of the promontory of Piombino overlooking the Piombino Channel which separates the Elba from the mainland. The lighthouse was built in 1928 on the same place where once was La Rocchetta, one of the four defensive fortifications, then demolished in the 1920s in order to make room for a panoramic town square above the cliff, which were connected to each other by walls that surrounded the city. The lighthouse consists of a quadrangular grey stone tower in Neo Gothic style, high, with castellated balcony