Revellers take part in the annual “Naval Battle” of Vallecas during the Virgen del Carmen Festival in Madrid, Spain July 17, 2016. (Photo by Javier Barbancho/Reuters)

Men selling sheep wait for customers at a local livestock market, ahead of the Eid al-Adha festival, in Lagos, Nigeria September 11, 2016. (Photo by Akintunde Akinleye/Reuters)

View of Evolutions installation by artist Yann Nguema at the Saint-Jean Cathedral during the rehearsal for the Festival of Lights (Fetes des Lumieres) in Central Lyon, France, late December 7, 2016. (Photo by Emmanuel Foudrot/Reuters)

The heads of slaughtered water buffalos and a goat are lined up on the ground after the animals were sacrificed during “Dashain”, a Hindu religious festival in Kathmandu, Nepal October 10, 2016. (Photo by Navesh Chitrakar/Reuters)

Indian performers painted as tigers take part in the “Pulikali”, or Tiger Dance, in Thrissur on September 17, 2016. The folk-art event is held every year in the town during the “Onam” festival. (Photo by Arun Sankar/AFP Photo)

NEPAL: A devotee is smeared with a vermillion powder while celebrating the “Sindoor Jatra” vermillion powder festival at Thimi, in Bhaktapur, Nepal, April 14, 2016. (Photo by Navesh Chitrakar/Reuters)

Members of the “Familia Gladiatoria Carnuntina” fight in the historic amphitheatre during the Roman Festival at the archeological site of Carnuntum in Petronell, Austria, June 11, 2016. (Photo by Leonhard Foeger/Reuters)

Local priests celebrate the “Aimara New Year”, an Andean Bolivian traditional festival that marks the winter solstice in El Alto, Bolivia, 21 June 2016. Aimara or Aymara means the Return of the Sun. (Photo by Martin Alipaz/EPA)