Since its completion in the early 1960's, Tresidder Memorial Union has served as the primary meeting and resource center for campus inhabitants and members of the surrounding community. It is now part of a larger student union community, which includes Old Union and White Plaza. Tresidder, as it is commonly known, includes a variety of services, ranging from event facilities to a student-run store. The facility is available until 2 am each day and is open every day of the year, except University holidays.