“Sniff out the Appenzell Cheese”. Alexander Hunter, 30, of Greenwich, Conn., took this photo in Appenzell, Switzerland, in September 2014. (Photo by Alexander Hunter)

Revellers watch as police officers dance in the street at the Notting Hill Carnival in west London, August 30, 2015. (Photo by Toby Melville/Reuters)

The National parks department hosts the 30th annual “All-Women Lifeguard Tournament” in Sandy Hook NJ. July 30, 2014. (Photo by Anthony Causi)

Dogs perform during “Stars and starlets”, a new programme, at the National Circus in the Ukrainian capital of Kiev April 30, 2015. (Photo by Gleb Garanich/Reuters)

Megan McKenna, Amber Turner and Yazmin Oukhellou sightings at Aristocats nightclub Mayfair on March 30, 2017 in London, England. (Photo by Goff Photos)

Cloud inversion taken at Sunrise in Mam Tor, Derbyshire, UK on August 30, 2016. (Photo by David Zdanowicz/Rex Features/Shutterstock)

A model poses for a picture during the 20th World Bodypainting Festival 2017 on July 30, 2017 in Klagenfurt, Austria. (Photo by Jan Hetfleisch/Getty Images)

Leigh-Anne Pinnock arriving at Gilgamesh Camden on September 30, 2017 in London, England. (Photo by Flynet Pictures)