Premise: The Cashman Center or the Cashman Field Center is a 483000 sqft complex on a 55 acre site in Las Vegas, Nevada. Operated by the Las Vegas Convention and Visitors Authority it includes Cashman Field and a 98100 sqft convention center. The center is mostly used for locals events, but does host national events like the second and the 2008-09 United States Bowling Congress Open Championships.
Hypothesis:  Cashman Center is the most expensive project that Las Vegas has created.