A man standing on the first cables during the construction of the Golden Gate Bridge with the Presidio and San Francisco in the background, San Francisco, California, 1935. (Photo by Underwood Archives/Getty Images)

People board a train at the West Railway Station on January 7, 2012 in Beijing, China. China's railways are bracing themselves as millions of migrant labourers are set to leave cities for their native villages to celebrate the Chinese New Year. (Photo by Lintao Zhang/Getty Images)

Marcelo Gutierrez of Colombia in action during the Valparaiso mountain bike downhill race in Valparaiso, Chile on February 11, 2018. Runners from around the world participated in the mountain bike race on the streets of the port. (Photo by Rodrigo Garrido/Reuters)

A man has an egg smashed on his head to raise money for charity during the World Egg Throwing Championships and Vintage Day in Swaton, Britain June 28, 2015. (Photo by Darren Staples/Reuters)

Gengis “Lil Ceng” Ademoski (L) and Khaled “KC” Chaabi (R) of the four time world champion Berlin dance troupe “Flying Steps” strike a freeze on a piano played by muscian Jia Lim (C) of Singapore at the 17th century waterfront area of Nyhavn in build up to the Red Bull Flying Bach European Tour, a show that features the cultural clash of break dancing with the classical music of Johann Sebastian Bach, on August 30, 2011 in Copenhagen, Denmark. (Photo by Dean Treml/Red Bull via Getty Images)

Competitors line up their boats for some formalities during the Aberdeen Dragon Boat Races. (Photo by Jessica Hromas)