Under the Events > Venues navigation menu section, you can view the list of venues that have been added as part of all your events. From here you can view basic details of each venue, and through the actions menu you can edit the venue details, open an overview page of the venue, or delete a venue.
Note: it is not possible to delete a venue if the venue is being used by at least one event.
From this page, you can also add additional venues by clicking on 'Add Venue'. Any venues as part of the venue list will appear as options when creating your events.