by Richard L. Thornton, Architect & City Planner The Bilbo Mound in Savannah, GA is one of the oldest known examples of architecture and civil engineering in the Americas and certainly the oldest in North America. Currently, it predates any mound or public works project in Mexico.   The base of the structure was radiocarbon … Continue reading Savannah’s Bilbo Mound . . . the oldest architecture and civil engineering in North America