Visitors to Paris were surprised on Sunday when strolling up the Champs-Elysees as dozens of workers began enveloping in a shimmering wrapper a posthumous installation by artist Christo at Arc de Triomphe monument. Workers were shuffling around the 50-metre high, 19th century arch setting up 25,000 square metres of silvery blue, recyclable plastic wrapping, which will be on view between Sept. 18 and Oct. 3. Imagined decades ago in 1961 by the late Bulgarian-born artist Christo and his wife and fellow artist Jeanne-Claude, who died in 2009, “L’Arc de Triomphe, Wrapped” was finally brought to life by Christo’s nephew, Vladimir Yavatchev at a cost of about 14 million euros. “The biggest challenge for me is that Christo is not here. I miss his enthusiasm, his criticisms, his energy and all of these things. That, for me, really is the biggest challenge,” Yavatchev told Reuters. Christo, who spent part of his life in Paris and in New York, once rented a small room near the famed Champs-Elysees avenue after moving to Paris in 1958, when he experimented with wrapping discarded crates and barrels with fabric and rope, according to an official site about the artist.