Lewis Edgers, Professor Emeritus, Civil and Environmental Engineering, earned his BS in Civil Engineering at Tufts and his MS and PhD degrees at MIT. He has served as faculty host for several Travel-Learn trips including a 2016 trip to the Dordogne. A registered professional engineer and a Fellow of the American Society of Civil Engineers, Prof. Edgers is especially interested in the relationship between people and their environment. The French countryside offers a unique opportunity to see beautiful landscapes and extraordinary architecture from prehistoric times to the present. Prof. Edgers will discuss the caves, castles, and cathedrals of the countryside, using many local examples (Lascaux, Beynac, Mont.-St.-Michel, Bourges). His presentations will consider the importance of climate, geology, technology, and social factors in the formation of these elements of urban architecture.