Open House at Knights of Columbus Hall 15 N. Hickory Arlington Heights from 1:00 PM to 5:00 PM. ALL ARE INVITED!! Members, Ladies Auxiliary, Friends, Families of Our Member Parishes are invited to the 50 year Celebration. Learn about the many and varied events that have been held there over the years!! Get information about hosting your event at our hall. Bring a friend and take home a souvenir program and gift!!