This 288-square-mile park, 163 miles north of Sydney, is one of the protected enclaves that make up the World Heritage–listed Gondwana Rainforest, a living fossil of ferns, conifers, and primitive flowering plants. It also happens to be a river-running and mountain-biking paradise. The best way to explore it? Barrington Outdoor Adventure Center’s two-day multisport trip ($375). Day one: traverse 20 miles of rainforest on your Kona mountain bike. The next day, paddle the beginner-friendly Barrington River in a Bass kayak. Bonus: Barrington Tops sits at the north end of the Hunter Valley, one of Australia’s best wine regions. When the adventuring’s done, drive 100 miles south to sample the goods at Stonehurst Cedar Creek Vineyard and crash in a private fireplace-and-grill-equipped cottage (from $159; cedarcreekcottages.com.au).