Explore the unique characteristics of the international border region's architecture with a panel discussion by three prominent architectural historians and experts, as well as a walking tour of historic Eastport. The walking tour is scheduled for 2 p.m. and  begins at the Tides Institute and Museum of Art. The panel discussion follows at 4 p.m. and takes place at the Knights of Pythias Hall, 6 Boynton Street, Eastport.