They are cylindrical so the force of wind and waves is lessened. If the walls were flat they would have much more pressure on them ................
they used to be sploge shaped but that just looked silly
Lighthouses are not spiraled, they are towers.
Egyptians were the people who invented lighthouses. Lighthouses guide sailors as navigators and as warning systems
There are 23 lighthouses in Connecticut.
Ohio has 24 lighthouses.
their are currently 1,983,475 lighthouses
Nobody actually know when and where the lighthouses were built.
There are lighthouses all along the coast.
Canada has the most lighthouses in the world.
Cape Romain Lighthouses was created in 1857.
Billingsgate Island lighthouses were eroded away.
Thomas Stevenson, the father of Robert Louis Stevenson, was responsible for developing the design and construction of the cylindrical stone lighthouses, which greatly improved maritime safety during stormy weather conditions. These lighthouses were instrumental in guiding ships safely through treacherous waters even in adverse weather.
Michigan has the most lighthouses with 120.