zoom in and you are looking at the front door of the exhibit hall where all the gaming will take place.
https://www.google.com/maps/@45.5306127,-122.6545755,3a,56.9y,226.13h,84.92t/data=!3m5!1e1!3m3!1sSn2Yfz6GFB0cYjtTMRJo4A!2e0!5s2011-09
edited for more seasonally accurate photo