Google have added a new navigation tool to the user photographs that can be viewed when in Street View. When viewing user photos you will now find 'orbs', small silver circles, on and around the photo.
These new orbs allow the user to click-and-drag to move to a new nearby photo.
You can see the new orbs in action in the Street View of the Sagrada Familia in Barcelona embedded below.
Via: Google LatLong