The 2mile (3km) Waterfront Trail links Explosion! The Museum of Naval Firepower with the Royal Navy Submarine Museum, and offers stunning panoramic views of Portsmouth Harbour. Pass by the marinas and watch all kinds of ships and boats sailing in and out of the busy harbour. This useful trail map points out places of interest and their history on the route – Click here to download trail If you need some refreshment en-route, then divert into Royal Clarence Yard where you will find a selection of waterfront bars, cafes & restaurants to sustain you.