You can click on the Event Number pin to open the map in a new window. If you are using FireFox, or IE 7 or 8, you can right click and open in a new tab rather than a new window. On the map in the separate window, you can see the Street view for this location.
Once you have opened a separate window or tab for the Event location, you can click on a Person icon in the top left Google map window to then get the Street View of the location.
Note that street views are not available for all locations.