The Nina, a replica of the ship on which Columbus sailed across the Atlantic on his three voyages of discovery to the new world beginning in 1492, transits Chickamauga Lock Oct. 20, 2013 after a 10-day visit to Chattanooga, Tenn. The Nina and her sister ship, Pinta, are navigating up the Tennessee River via the U.S. Army Corps of Engineers Nashville District’s navigation locks with visits to Lenoir City and Knoxville before heading downstream for stops in Alabama and Mississippi. For additional information on these floating museums, go to http://thenina.com/.