A view of the construction site of the Chateau de Guedelon near Treigny in the Burgundy region of France, September 13, 2016. Blacksmiths, stonemasons and quarry men are hard at work in a Burgundy forest building a 13th-century-style castle using the most basic tools and materials, replicating the methods used hundreds of years ago to better understand them. (Photo by Jacky Naegelen/Reuters)

Australian knight Philip Leitch (R) has a floral basket on his helmet smashed by an opponent at the St Ives Medieval Fair in Sydney, one of the largest of its kind in Australia, September 25, 2016. (Photo by Jason Reed/Reuters)

It wasn’t exactly the Westminster Dog Show, but it was serious stuff. Photo: five-month-old Carly LeRolls Gottesman, at Pooch Prom at Downtown at the Gardens on Saturday, April 26, 2014. Carly was crowned the 2014 Pooch Prom queen. (Photo by Thomas Cordy/The Palm Beach Post)

A rainbow is seen near a cloud south of Corvallis, Ore., Monday, May 19, 2014. (Photo by Andy Cripe/AP Photo/The Corvallis Gazette-Times)

The moon is seen in its waxing gibbous stage as it rises behind the helicopter from the original Batman television show, which people can ride at the New Jersey State Fair, Saturday, June 22, 2013, in East Rutherford, N.J. The moon, which will reach its full stage on Sunday, is expected to be 13.5 percent closer to earth during a phenomenon known as supermoon. (Photo by Julio Cortez/AP Photo)

A dinosaur robot produced by Tyco Electronics Japan G.K. is controlled by a smartphone at CEATEC (Combined Exhibition of Advanced Technologies) Japan 2014 held at at Makuhari Messe in Chiba, east of Tokyo, Japan, 07 October 2014.With a Sharp Aquos ZETA mobile phone model, users can make the 6.5-meter (21 feet, 4 inches) long, 2.1-meter (6 feet, 11 inches) tall dinosaur robot to walk forward and backward, jump, move its head, hands and legs up and down, left and right, open and close its mouth by touching the screen panel and make it bark by shaking the handheld. (Photo by Kimimasa Mayama/EPA)

Trevor Olson, from Minnesota, dressed as the character “Joker”, poses for a photograph at New York's Comic Con convention, October 9, 2014, in New York City. The event draws thousands of costumed fans, panels of pop culture luminaries and features a sprawling floor of vendors in a space equivalent to more than three football fields in Javits Center. (Photo by Shannon Stapleton/Reuters)