MT. VERNON, VA.- A painting of George Washington hangs in his Mount Vernon Estate December 4, 2004 in Mount Vernon, Virginia. The holiday tour treats visitors as holiday guests of the Washington family giving them an opportunity to visit the mansion and walk along candlelit paths during Mount Vernon by Candlelight Holiday Tour, the only time during the year that the Estate is open exclusively for public evening tours. Modern Christmas trees are absent at Mount Vernon as they were not common until the 19th century.