You can view all the events that you are a participant from various workspaces under My Calendar. To find My Calendar, click on the user drop-down menu (top right next to your name) and then click Calendar.
This will show all the events (where you are a participant), milestones and tasks from all the workspaces you are a member. Each item is color coded for the workspace. Tasks are denoted by a check mark icon and milestones by the diamond.
Note: You can click on items on the calendar for more information.