A reveler in costume with a broom jumps during a Zombie Walk event in central Kiev on October 27, 2018, ahead of Halloween celebrations on October 31. #

Members of the street-performance troupe Macnas participate in their Halloween parade called "Out of the Wild Sky" in Galway, Ireland, on October 28, 2018. #

Surfers arrive in costume at the 12th annual Blackie's Halloween Surfing event in Newport Beach, California, on October 27, 2018. #

Boston terriers in costume are seen during a Halloween event in Kawasaki, south of Tokyo, Japan, on October 28, 2018. #

Members of the performance troupe Macnas participate in a Halloween parade in Galway, Ireland, on October 28, 2018. #

A jack-o'-lantern under construction during the Great Pumpkin Carve contest in Chadds Ford, Pennsylvania, on October 18, 2018 #

A man in a scary clown costume takes part in the "Haunted Subway" event in Union Square Station in New York, on October 18, 2018. #

A boy chooses a pumpkin among many at a pumpkin patch in Irvine, California, on October 20, 2018. #

Liam Vasquez, 2, left, and his father, Will Vasquez, right, try on Halloween masks at a department store on October 3, 2018, in Pembroke Pines, Florida. #

People take part in the Kawasaki Halloween parade in Japan on October 28, 2018. #

Locals dress up in various Halloween costumes during celebrations on October 28, 2018, in Tokyo, Japan. #

A participant in a Halloween event in Kawasaki, Japan, on October 28, 2018. #

Costumed people and pups gather for Halloween celebrations in Tokyo, Japan, on October 28, 2018. #

A man in a Halloween costume rides a personal watercraft in the East River at East River Park in Manhattan, New York City, on October 28, 2018. #

A ring-tailed lemur eats seeds out of a pumpkin at the San Francisco Zoo on October 26, 2018. #

Members of the troupe Macnas perform in Galway, Ireland, on October 28, 2018. #

Performers with Macnas take part in a Halloween parade in Galway, Ireland, on October 28, 2018. #

An attendee wears a "Beaker" Halloween costume at KCRW's Masquerade Bowl at the Los Angeles Theatre on October 27, 2018. #

A pit bull dressed as a kissing booth participates in the Haute Dog Howl'oween Parade 2018 on October 29, 2018, in Long Beach, California. #

Costumed participants pose before a Halloween parade in Kawasaki, Japan, on October 28, 2018. #

A giraffe reaches for a jack-o'-lantern filled with treats at the London Zoo on October 25, 2018. #

A ghostly decoration hangs above the shop doorway during Whitby Goth Weekend on October 27, 2018 in Whitby, England. #

People dressed in costumes take part in a Halloween festival on October 27, 2018, in Seoul, South Korea. #

A man in a frightening costume hides in the dark during the "Haunted Subway" event in Union Square Station in New York on October 18, 2018. #

A participant poses for the camera after a Halloween parade in Kawasaki, Japan, on October 28, 2018. #

Susan Godwin and her dog, Tasha, pose at the 28th Annual Tompkins Square Halloween Dog Parade in New York, on October 28, 2018. #

The silhouette of a weather vane depicting a witch and her black cat on a broom, photographed at sunset on October 15, 2018, in Riex, Switzerland. #