Since the 1930s, the unique cultural and picturesque landscape of Indonesia’s island of Bali has lured millions of visitors. But even as Bali has boomed, the delights from the rest of Indonesia’s archipelago of more than 17,000 Islands have often been overlooked. The new government of President Joko Widodo has vowed to change that. With a goal of attracting 20m visitors by 2020, it is urging...