The purpose of a lighthouse is to assist maritime navigation by providing visual guidance to ships and boats navigating coastal waters and dangerous areas. Lighthouses emit light signals that indicate safe entry points, treacherous coastlines, and hazardous conditions, significantly increasing safety for vessels. They often feature distinctive architectural designs and rotating beams that can be seen from considerable distances, especially at night. Lighthouses are equipped with various technologies, including radar and sonar in modern applications, but their primary role remains as visual landmarks and orientation aids for sailors in busy shipping lanes.