Meramec Caverns barns, a few of which still stand along Route 66, were included on Landmarks Illinois' annual list of its Most Endangered Historic Places. This is what the nonprofit organization said about Meramec Caverns barns: Meramec Caverns is a cave network and tourist attraction located on Route 66 near Stanton, Missouri. In 1933, amateur … Continue reading Meramec Caverns barns among Most Endangered Historic Places in Illinois