What is adjacent to Treasure Island and opposite Wynn Las Vegas ?
Now , as Chairman of the Board and Chief Executive Officer of Wynn Resorts , Limited , Wynn has developed Wynn Las Vegas , which opened on April 28 , 2005 ; Wynn Macau , which opened in September 2006 ; Encore at Wynn Las Vegas , which opened December 22 , 2008 ; and Encore at Wynn Macau , which opened on April 21 , 2010 .