The Hindu religion may have roots in the traditions of the Indus valley civilization, which flourished during the 3rd and 2nd millennia B.C. Hinduism is thus thought by many scholars to be the most ancient of the world religions practiced today. There are now nearly 1 billion Hindus in the world, and a majority of them live in India—about 80 percent of the population of India is Hindu. On this Expedition, we’ll visit Swaminarayan Akshardham . Located in New Delhi, India, it is the largest Hindu temple in the world.