While autumn falls in the States, watch spring bloom in Maria Island National Park. Yes, this drop of earth off the east coast of Tasmania is a bit far out, but you'll feel like a castaway winning the island lottery. The Maria Island Walk, an eco-friendly, four-day journey, takes you where tourists rarely venture. Spend two to eight hours a day strolling white-sand beaches that feel untouched -- save for the Aboriginies who made footprints here thousands of years ago -- and explore blue gum forests and the sea cliffs of Half Moon Bay. When you scale the top of 2,300-foot-high Mt. Maria, look for humpback whales hugging the shoreline.