I ancient times and before the development of clearly defined ports, seafarers was guided by fires on hilltops. It later became practice to raise the visibility of the fire, by placing in on a platform and thus the idea of the modern day lighthouse was born. In ancient times however these beacons functioned more as entrance markers to ports than warning signals for reefs and promontories like today.
As building methods and materials evolved, so did the construction of lighthouses and I was curious to see if I could find any examples of sheet metal lighthouses. To my delight I found a beautiful collection of examples from all over the world. Enjoy!
Pictures from various sources.