Smeaton's Tower.

One of the world's most famous lighthouses built on the treacherous Eddystone Rocks 14 miles out at sea off Plymouth.

Built by Smeaton between 1756 and 1759 out of granite blocks, dovetailed to fit together and make one structure.
This tower used candles for its light at first, then changed to an Argand oil lamp in 1810.
It stood for 127 years, until signs of cracking on its base rock caused the need for a 5th tower.
Smeaton's old tower was dismantled piece by piece and re-erected on Plymouth Hoe, where it still is today.