IN LAS VEGAS, Green Valley Ranch, which opened in December 2001, has just started an expansion of a second tower including 290 rooms and 35,000 square feet of meeting space. Plans call for completion of the project in November 2004. The resort, six miles from the Strip, offers panoramic views of the city. It now has 201 rooms, 20,000 square feet of meeting space, and a 55,000-square-foot casino. www.greenvalleyranchresort.