Just 13 days after the Zhangjiajie Glass Bridge opened in 2016 in Hunan, China, it was forced to close. Not because it was faulty but because the attendance rates far exceeded capacity. Built to hold 800 people safely at any given time, daily attendance was expected to be around 8,000. When 80,000 visitors showed up each day after it opened, authorities needed some time to reevaluate what exactly they had. Parking, ticketing, and customer service were boosted before the bridge reopened.