Visitors view the Cyclorama of the Battle of Gettysburg displayed at the main visitors center in Gettysburg, Pennsylvania. This painting depicts the fury of the final Confederate assault on July 3, 1863 and was painted by French artist Paul Philippoteaux . It originally opened in Chicago in 1883 and is 377 feet long, 42 feet high and weighs 12.5 tons. May 31, 2013. VANESSA VICK FOR THE NEW YORK TIMES