This introductory chapter sets the geographical and conceptual tone for the book. It describes the physical and human geography of South Asia and how these have interplayed with religion and caused a religious heritage to develop over centuries and millennia. The chapter examines some of the multitudinous relationships between religious heritage and tourism, particularly looking at the challenges and opportunities that arise when tourism utilizes religious tourism in South Asia as a cultural heritage asset. All of the chapters are briefly outlined, and the conclusions are drawn to tie it all together.