Charleston is the only walled city in British colonial North America. Yet this defensive feature, completed in 1706, is largely invisible, in both the landscape and the imagination. Excavations done in 2008 and 2009 of the redan, or salient angle, at Tradd Street provided the first opportunity in forty years to explore a section of the wall, and the first in nearly a century to expose the foundation. Join the Museum's Curator of Historical Archaeology, Martha Zierden, to hear new details on construction, maintenance, and eventual abandonment of the city's early colonial defenses and see several items that will go on permanent exhibit in our Lowcountry History Hall.