Lighthouses

Typically lighthouses are meant for aiding navigation and pilots at sea. Lighthouses are buildings or towers, which have system of lamps which emit light to guide ships.
What are Lighthouses and How Do They Work?
Have you ever come across huge towers on sea coasts with a rotating flashlight? Well, these huge structures are called lighthouses.

Pharos Lighthouse of Alexandria
Considered one of the seven wonders of antiquity, the Pharos Lighthouse of Alexandria is still surrounded by stories and legends. Reaching the height of a 40 stories building, it survived for two millennia and it was a well-known place that made a nation proud.