California lighthouses are essential navigational aids along the state's rugged coastline. They were built to guide ships safely through treacherous waters and rocky shores. Notable examples include the Point Reyes Lighthouse and the Pigeon Point Lighthouse, both of which are popular tourist attractions today. Many of these lighthouses were constructed in the 19th century and feature unique architectural styles. They often stand on cliffs or remote islands, providing stunning views of the Pacific Ocean. Today, several lighthouses, like the Point Loma Lighthouse, are preserved as historical sites, showcasing California's maritime heritage.