The 1,000 ft. glass-bottom bridge over China's Zhangjiajie Grand Canyon is currently closed. Not because of danger. It has been so popular that it had to be temporarily closed so that better infrastructure (parking, facilities, ticketing, etc.) could be built to handle the massive crowds.
There are a lot of people who completely freak when they actually get onto the glass walkway. I can't say I blame them...but it's hilarious to watch.