If your trip to Portsmouth is all sorted out but your travel itinerary is looking a little empty, let us give you a few hints and tips.Gunwharf Quays and Spinnaker Tower are notable attractions that all visitors should make time to check out. Map out a route and spend an hour or so exploring each one.Not far from the heart of the city, HMS Victory is one sight you might like to consider adding to your to-do list. Mary Rose Museum and Southsea Castle are also close by and worth a detour.