Walpurgis Night is a night of magical celebration on April 30th in some parts of the world. On this night, people make bonfires, play music and have parties. The night is named after a special saint named St. Walburga who is said to have protected people from witches and evil spirits on this night. People believe that the bonfires and music are enough to drive away any bad spirits, so it becomes a fun and special night. Kids also dress up in costumes and give each other treats. It's a big celebration and a night full of fun!