Don't go City Hall or any City of Las Vegas office on a Friday. You will be surprised to have the doors locked.
http://www.lasvegassun.com/news/2011/jan/06/mayor-doesnt-four-day-city-work-week/
http://www.lasvegassun.com/news/2011/jan/06/mayor-doesnt-four-day-city-work-week/