Sacred sites are among the world’s most visited and venerated places. They offer another level of experience to both visitors and pilgrims, full of intensity, presence and, for some, a higher level of consciousness. The drawback is that they are often overcrowded and full of tourists whose presence tends to ruin a very special moment. Secret Sacred Sites reviews 100 lesser-known sacred sites that are often only known to locals, guaranteeing a truly authentic visit. In his 40 years of pilgrimages, renowned National Geographic photographer Martin Gray has visited 160 countries and photographed hundreds of these sites. Here he has selected his favourite hidden holy places, the result of a lifetime’s quest.