Smoke rises from the sauna as Eda Veeroja walks past with birch twigs at Mooska farm near the village of Haanja December 20, 2014. Smoke saunas are usually built without chimney and have a stove that rest on boulders where firewood is burnt until the room heats up. When the smoke is gone and the room reaches the right temperature, people sit inside and whisk each other with birch twigs. The tradition of the smoke sauna in Voromaa vicinity, in the south of Estonia, is enlisted in the UNESCO representative list of the intangible cultural heritage of humanity. (Photo by Ints Kalnins/Reuters)

“Baby jumping (El Colacho) is a traditional Spanish practice dating back to 1620 that takes place annually to celebrate the Catholic feast of Corpus Christi in the village of Castrillo de Murcia near Burgos. During the act – known as El Salto del Colacho (the devil's jump) or simply El Colacho – men dressed as the Devil (known as the Colacho) jump over babies born during the previous twelve months of the year who lie on mattresses in the street. ... The festival has been rated as one of the most dangerous in the world”. – Wikipedia

Photo: A man representing the devil leaps over babies during the festival of El Colacho on June 26, 2011 in Castrillo de Murcia near Burgos, Spain. The festival, held on the first Sunday after Corpus Cristi, represents the devil taking away original sin from the newly born babies by leaping over them. (Photo by Denis Doyle/Getty Images)

“The Eton wall game is a game similar to football and Rugby Union, that originated from and is still played at Eton College. It is played on a strip of ground 5 metres wide and 110 metres long next to a slightly curved brick wall, erected in 1717”. – Wikipedia

Photo: The “Collegers” and the “Oppidans” of Eton College take part in the “Wall Game” as boys in their traditional school uniform watch from on top of the wall on November 17, 2007 in Eton, near Windsor, Berkshire, England. The first recorded “Wall Game” took place in 1766 with competition between the two houses at the boarding school remaining as fierce as ever on the annual St. Andrew's day event. The object of the game is to get the ball to either end of the wall and score a goal, which has not happened since 1909. As well as scoring a goal the players can win points with a “shy”, where the ball is held against the wall and touched by the hand and awarded one point. (Photo by Christopher Furlong/Getty Images)

A poster by street artist Aaron Li-Hill as part of the "Brandalism" project is displayed at a bus stop in Paris, France, November 28, 2015, ahead of the United Nations COP21 Climate Change conference in Paris. Brandalism is a revolt against corporate control of the visual realm. Following on in the guerilla art traditions of the 20th Century and taking inspiration from Agitprop, Situationist and Street Art movements, the Brandalism project sees artists from around the world collaborate to challenge the authority and legitimacy of commercial images within public space and within our culture. (Photo by Benoit Tessier/Reuters)

A couple hugs while standing near a Christmas tree made out of plastic bins and plastic hampers outside the Museum of History in Monterrey, Mexico, December 4, 2015. The humble Christmas tree has a rich history, from evergreen trees used to symbolise eternal life in Ancient Egypt to tree worship among pagan Europeans. The modern version has its origins in Germany, where the song “O Tannenbaum” is still a festive favourite. Today the traditional tree with lights and decorations appears in cities including Washington, Moscow and Beirut. Alternative constructions range from recycled rubbish in Mexico City to old window frames in Rakvere, Estonia. Whatever the shape or size, the message is the same: Merry Christmas. (Photo by Neil Hall/Reuters)

Chief priest Gbenga Saala raises a cutlass to kill a dog during an annual prayer and sacrifice celebration of the iron god Ogun in Abuja, Nigeria, June 23, 2015. Every year worshippers offer a dog as sacrifice to Ogun, a traditional Nigerian deity, in hope of an auspicious year ahead. Taxi drivers, blacksmiths, panel beaters and mechanics – trades that depend on metal for their livelihood – pay homage to Ogun, led by high priest Gbenga Saala. As part of the ceremony, the priest pours the dog’s blood on symbols of these workers’ trade: keys, spanners and other tools piled up in a metal barrel. (Photo by Afolabi Sotunde/Reuters)

Farmers arrange bunches of water lilies after harvesting them from the wetlands in Barishal, Bangladesh on March 21, 2023. Floating through 10,000 acres of canal, farmers use their little boats to fetch the flowers. (Photo by Joy Saha/Cover Images)

This year’s World Nomad Games, a celebration of nomadic heritage, took place in the Issyk-Kul province of Kyrgyzstan. Eleanor Moseman photographed female competitors who had travelled from all over central Asia and eastern Europe, and explored the difficulties and challenges they face as competitors. (Photo by Eleanor Moseman/The Guardian)