This vast island nation attracts a fraction of the tourists it should do every year, thanks largely to restrictive visa regulations. And the majority of visitors who do come spend their whole time in Bali. Which is a shame, as Indonesia has an abundance of treats to offer travellers, from world class ancient monuments to awe-inspiring natural scenery. Travel tends to be more challenging the further you are from Java, but the extra effort is usually rewarded. Indonesia tops our 2015 ethical travel guide to South East Asia, by a big margin.