Depending on how old your site is, it may not have included a link to your expired events. The SiteFarm team opted to not add this feature to existing sites so as to avoid causing disruption to site owners' existing set-up and navigational structure. New sites have this link available by default.
The View responsible for displaying expired events exists in everyone's site, regardless of the presence of the link, so creating one if it doesn't already exist is a very straightforward process.
