A farmer sleeps near cows at the International Agricultural Show in Paris, France, February 29, 2016. The Paris Farm Show runs from February 27 to March 6, 2016. (Photo by Benoit Tessier/Reuters)

The Lexus UX concept is displayed on media day at the Paris auto show, in Paris, France, September 30, 2016. (Photo by Benoit Tessier/Reuters)

A tattoo of the model who presents a creation by designer Maxime Simoens is seen in detail, as part of his Haute Couture Spring-Summer 2019 collection show for fashion house Azzaro Couture in Paris, France, January 21, 2019. (Photo by Gonzalo Fuentes/Reuters)

A model presents a creation by designer John Galliano as part of his Spring/Summer 2020 women's ready-to-wear collection show for Maison Margiela during the Paris Fashion Week in Paris, France, September 25, 2019. (Photo by Gonzalo Fuentes/Reuters)

A model wears a creation for Anthony Vaccarello's Spring/Summer 2015 ready-to-wear fashion collection, presented in Paris, Tuesday, September 23, 2014. (Photo by Jacques Brinon/AP Photo)

In this photo taken Tuesday, October 14, 2014, skulls and bones are stacked at the Catacombs in Paris, France. The subterranean tunnels, stretching 2 kilometers (1.24 miles), cradle the bones of some 6 million Parisians from centuries past and once gave refuge to smugglers. The site used to close at 5 p.m., but is now staying open until 8 p.m. The change is mainly aimed at allowing more people to visit and reducing long lines, since it can only hold a limited number of people at a time and visits can't be reserved in advance. (Photo by Francois Mori/AP Photo)

Winner of the National Park Foundation's photo contest; Honorable Mention: Fan Favorite. Grand Canyon National Park, Arizona. Three friends enjoy sunrise over the Grand Canyon. (Photo by Peter Blanchard)

View of colourful rock formations at the Zhangye Danxia Landform Geological Park in Gansu Province, China. The Zhangye Danxia Landform Geological Park is 40km from Zhangye city. The park spans more than 400 square kilometers in Gansu. The unusual terrain is the result of red sandstone and mineral deposits carved over the years by natural forces. (Photo by ImagineChina/The Grosby Group)