The Mekong Tourism Development Project (MTDP) is being implemented in three countries of the Greater Mekong Sub-region (GMS) – Cambodia, Laos and Vietnam. This region is the fastest growing tourism destination in the world. The objective of this book is to show tourists how to meaningfully participate in responsible tourism activities by showing them where and how to do it. We have identified 88 responsible tourism activities that we think tourists should visit. In each write-up we have tried to describe “the experience” (from the tourist’s point of view) and explain “how it helps” (from the host’s point of view).