On this day, 31 years ago, on October 10, 1994 (September 6, 1994, the world's longest slide was built in Beijing. In early October 1994, the world's longest slide was built at the Eighth Avenue of the West Mountain of Beijing. This slide is 1700 meters long and has more than 50 corners. It has a top speed of 80 kilometers per hour, a height drop of 240 meters, and an average slope of 15 degrees.