The sun reflects off the surfaces of the Longsheng rice terraces, in Longsheng County, China, on March 11, 2016. #

Rice terraces in the late afternoon light in the mountainous district of Mu Cang Chai, in the northwestern Vietnamese province of Yen Bai on October 23, 2012. #

Illuminated terraces by the ocean, Shiroyone Senmaida, Noto Peninsula, Ishikawa Prefecture, Japan, on January 15, 2015 #

Terraced rice paddy fields during the harvest season in Mu Cang Chai, northwest of Hanoi, on October 4, 2015. #

Yuanyang Terrace, China, on February 23, 2016. #

Village houses and water filled rice terraces in the mountain, Longsheng, Guangxi Province, China, on June 19, 2014. #

The terraced des Afforets vineyard is bathed in sunlight during a sunny fall afternoon in Switzerland's Rhone Valley on October 24, 2006. #

Terraced rice paddy fields during harvest season in Mu Cang Chai, northwest of Hanoi, on October 4, 2015. #

The vineyards of Lavaux, overlooking Lake Leman after an overnight snowfall in Bourg-en-Lavaux near Vevey, Switzerland, on March 7, 2016. #

An ethnic Hmong woman walks in a rice field in Mu Cang Chai district, Yen Bai province, Vietnam, on September 26, 2015. #

Hmong ethnic hilltribe women thrash bunches of paddy against a wooden box as they harvest rice on a terrace rice field in Mu Cang Chai district, on October 1, 2013. #

The sun illuminates rice terraces in Mu Cang Chai district, Yen Bai province, Vietnam on September 27, 2015. #

Tourists walk to the the Inca terraces of Moray near the town of Maras in Cuzco, Peru, on February 17, 2010. #

Paddy fields at Dangniu village in Congjiang county, China on August 25, 2016. #

A Google Earth satellite view of a significantly terraced slope beside a village in China's Yunnan province. #

Two farmers work in terraced rice fields near the village of Tiantou in Longsheng county, in southern China's Guangxi Zhuang Autonomous Region, on April 11, 2016. #

Rice terraces near the Dong minority village of Ping'an in China's southwest Gangxi province, on September 17, 2003. #

Photo taken on February 20, 2016, of rice terraces in Yuanyang County, Honghe Hani and Yi Autonomous Prefecture in southwest China's Yunnan Province. #

Ethnic H'Mong farmers work on terraced rice field in La Pan Tan village, in Vietnam's northern remote district of Mu Cang Chai, on September 27, 2009. #

A view of a rice paddy along the mountain slopes of Banaue city, Ifugao province, north of Manila, on April 16, 2008. #

Hmong ethnic hilltribe women harvest rice on a terrace rice field in Mu Cang Chai district, in the northern mountainous province of Yen Bai, on October 1, 2013. #

A farmer walks amid a terrace paddy field in Suichuan county, Jiangxi province, on June 1, 2013. #

Terraced rice fields of the Honghe Hani Rice Terraces in Yuanyang county, Honghe Hani and Yi Autonomous Prefecture, China, on January 12, 2016. #

Rice fields in Mu Cang Chai district, in the northern mountainous province of Yen Bai, on October 2, 2013. #

Ethnic Hmong villagers harvest rice in Mu Cang Chai district, Yen Bai province, Vietnam, on September 27, 2015. #