Fremont Street Experience is the No. 1 attraction in Las Vegas, with 18 million annual visitors.  The five-block-long urban pedestrian mall connects 10 downtown hotel-casinos with entertainment and retail, capped by the Viva Vision canopy.  Viva Vision is the world's largest video screen, the length of five football fields 90 feet above the street. Fremont Street Experience produces one-of-a-kind light and sound shows that incorporate 12.5 million LED lights and a 550,000-watt sound system.  Learn how the shows are made and how the Viva Vision operates in a special behind-the-scenes visit with Fremont Street Experience executives.