MOSAIC Georgia's Lighthouses BookWhen British general James Oglethorpe landed on Georgias coast in 1733, he realized that the success of his new colony, Savannah, depended largely on its establishment and development as a commercial port. Only three years later, in 1736, the first lighthouse was built on Tybee Island. Beginning there at the mouth of the Savannah River, this volume travels down the coast, telling the very different stories of the Cockspur Light, Sapelo Light, St.