When you are stood over the line at the top of the bridge, in your sights you can see Fratton Football ground, The Guildhall, Spinnaker Tower, Fort Purbrook and Fort Widley, the Dockyard buildings and more.
What a view!
Theres not many roads in the city where all those landmarks are viewable at once! For safety reasons the cache has had to be placed on the approach to the bridge but do take a couple of mins to walk to the top and see the view for yourself :-)
Parking can easily be found in the surrounding roads
Happy Hunting :-)