In Acts of Faith, acclaimed photographer Art Wolfe presents a stunning portrait of global rituals, festivals, and other faith-based traditions. Collected over 40 years of international travels, the images are full of energy and movement—swirling dervishes in Turkey, monks in Bhutan, millions of pilgrims massed on the banks of Ganges—revealing profound insights into the human experience and myriad expressions of spirituality. Art's photographs are accompanied by illuminating commentary from mountaineer and journalist Art Davidson, exploring the meaning of faith and the different ways in which it manifests all around the world, from the highest peaks of the sacred Himalayas to the sanctity of a grove of ancient olive trees.