National Yo-Yo Day is celebrated on June 6th every year. The toy was later introduced to Europe in the 1700s and became popular in the United States in the early 1900s. In 1928, Pedro Floresa a Philippine immigrant, became the first person to mass-produce toy yo-yos at his small toy factory located in California. The yo-yos success led to businessman Donald Duncan's purchase of Pedro's company in 1930. Donald wound up making 3,600 yo-yos an hour in the town of Luck, Wisconsin. It's now known as the "Yo-Yo Capital of the World". Here are some fun facts about yo-yos: The world's largest yo-yo is over 11 feet tall. The longest time spent playing with a yo-yo is over 30 hours. The most expensive yo-yo ever sold was worth $16,000. The yo-yo is really ancient toy. A 2,500-year-old Greek vase painting from around 500 BCE depicts a boy with a yo-yo. Yo-Yo Champion Shu Takada is a prominent player and champion from Japan. Aged 23, Takada has six world championships