Kirkendall-Spring / Man spinning prayer wheels at Kyichu Lhakhang in Paro, Bhutan, October 2014.

Kirkendall-Spring / Prayer wheels at the Chime Lhakhang, village of Sopsokha near Punakha. Bhutan, October 2014.

Kirkendall-Spring / Man spinning a prayer wheel at the National Memorial Chorten in Thimphu. This Tibetan style chorten was built in 1974 as a memorial to the third king Jigme Dorji Wangchuck. Bhutan, October 2014.

Enrique Lopez-Tapia / Buddhist prayer wheels with old Nescafe tin replacing traditions wheel, Manang (3.540m). Annapurna Conservation Area, Himalayas, Nepal, October 2009.

Bernard Castelein / Buddhist pilgrim sitting by a prayer wheel in Galdan Namge Lhatse monastery. Tawang, Arunachal Pradesh, India, February 2011.

Bernard Castelein / Buddhist giant prayer wheel in Tashiding Monastery, Sikkim, India October 2007

Bernard Castelein / Woman holding prayer wheel in Tashiding Monastery, Sikkim, India October 2007

Bernard Castelein / Women using prayer wheel in Tashiding Monastery beside prayer flags, Sikkim, India October 2007

Pete Oxford / Largest Buddhist prayer wheel in the world, Zhongdian, Deqin Tibetan Autonymous Prefecture, Yunnan Province, China 2006

Pete Oxford / Largest Buddhist prayer wheel in the world, Zhongdian, Deqin Tibetan Autonymous Prefecture, Yunnan Province, China 2006

Bernard Castelein / Buddhist woman spinning prayer wheel in Galdan Namge Lhatse monastery / Golden Age Lhatse monastery, Tawang, Arunachal Pradesh, India 2005

Bernard Castelein / Monpa woman with typical headdress spinning prayer wheel, Tawang, Arunachal Pradesh, India 2005

Bernard Castelein / Young buddhist monk using prayer wheel in Galdan Namge Lhatse monastery / Golden Age Lhatse monastery, Tawang, Arunachal Pradesh, India 2005

Bernard Castelein / Buddhist woman spinning prayer wheel in Galdan Namge Lhatse monastery / Golden Age Lhatse monastery, Tawang, Arunachal Pradesh, India 2005

Pete Oxford / Buddhist woman with prayer wheel, Gantey Gompa, Phobjika valley, Bhutan.2001

Pete Oxford / Hydro prayer wheel, between Tongsa and Chendebji, Bhutan.2001

Pete Oxford / Bhutan woman with prayer wheel. Gantey Gompa, Central Bhutan

Dr. Axel Gebauer / Jewellery, semi-precious stones and corals for sale at market, with a prayer wheel. Yushu, Qinghai Province, Tibet, China

Dr. Axel Gebauer / House for a prayer wheel over stream, Koko Nor lake, Tso Ngonbo, Qinghai Hu, Qinghai Province, Tibet, Amdo, China

Pete Oxford / Monks turning prayer wheel Dzongchung temple Punakha Dzong Central Bhutan

Enrique Lopez-Tapia / Woman on pilgrimage around Shigatse monastery, with Shigatse Dzong Fortress in background. Shigatse, Tibet, China. August, 2015.

Enrique Lopez-Tapia / Outer wall of Sakya Monastery, founded in 1268, with many prayer wheels. Tsang province, Tibet, China.

Enrique Lopez-Tapia / Barkhor kora, pilgrimage circuit in old centre of Lhasa, at night. Lhasa, Tibet, China.

Enrique Lopez-Tapia / Jam Khang Temple, in centre of Barkhor, with many prayer wheels. Lhasa, Tibet, China.

Enrique Lopez-Tapia / Prayer wheels on outer wall of Potala palace, Dzong fortress. Lhasa, Tibet, China.

Jeff Foott / Woman with baby on back spinning prayer wheels at Changangkha Lhakhang Monestary, 'The Fertility Temple'. Bhutan. September 2013.

Jeff Foott / Buddhist woman with prayer beads and spinning hand prayer wheel at Thimphu Tsechu Festival. Bhutan. September 2013.

Jeff Foott / Sleeping dogs and prayer wheel, on the way up to Paro Taktsang / Tiger's Nest Monestary. Bhutan. September 2013.

Enrique Lopez-Tapia / Tibetan Buddhist pilgrim holding prayer wheel, walking, Ganden Thubchen Choekhorling Monastery, shadows on wall. Litang, Garze Tibetan Autonomous Prefecture, Sichuan, China. 2016.

Enrique Lopez-Tapia / Prayer wheel in wall. Karsha Gompa Buddhist Monastery, founded in the 10th Century. Padum Valley, Zanskar, Ladakh, India. 2011.