The exact signification of a lighthouse as well as the utility
is to prevent unnecessary boat crashes which might occur while
navigation along the coasts of Australia. Of course, lighthouses
are not only found in Australia but all around the world.
Nevertheless, lighthouses have been reduced to about only 1500
globally. Since the last 20 years, technology has increased
causing the dramatic decline in lighthouses. Fortunately, some
are kept as touristic attractions where visitors can be informed
of their exact use and how it works.