The Mysterious Lighthouse

The lighthouse is a tower with a powerful light  using to signal or provide an aid to sailors.
It is made of concrete and steel , and built onshore or on the seabed .It was commonly used previously but now it became less essential to navigation because of improvements  in maritime navigation and safety .Today , many people visit and photograph lighthouses .They are so popular in everywhere and they can be a symbol of safety , influence , male fertility , truth in various organizations

 The oldest surviving lighthouse in North and South America