Bodh Gaya, India
Bodh Gaya is one of the most universally recognized and popular spiritual locations in India. This is the place where Prince Siddhartha (also known as the Buddha) was said to have achieved enlightenment under the Bodhi tree sometime around 500 B.C. Today, there is a temple in addition to the famous tree. It is a UNESCO World Heritage site, and one where you can feel the peace that Buddha must have felt when he connected with the universe and began to develop what became Buddhism.