The capital city of South Australia is simply enchanting, a treasure trove of shopping, fine arts, gastronomy and outdoor activity. Adelaide is the heart of the world's opal industry, selling gorgeous stones from South Australian mines. Be sure to hike the aptly named Mt. Lofty Ranges and catch a wave off the Fleurieu Peninsula. Indulge your adventurous palate and traipse into nearby wine regions like the famed Barossa Valley to pick up a deliciously drinkable souvenir.