What's On Events Kids Activity Trail Gapu-Monuk Saltwater Explore the Gapu-Monuk Saltwater exhibition and our museum galleries with this creative activity trail designed especially for children with curious minds. Download the activity trail. Download the answers to the activity trail. FREE with museum entry Join Become a Member and receive FREE or discounted entry to our events and exhibitions. Plan your Visit Our Plan Your Visit page has everything you need to know about a trip to the museum. Opening Hours 9:30am–5pm (6pm in January) every day of the year except Christmas Day. Find Us Located right on Darling Harbour (the Pyrmont side) at 2 Murray St, Sydney. Getting here.