Riders will be sent spiralling towards the ground at 104 kilometres per hour from 155 metres high.
Air tour operators at the Grand Canyon will be able to take more visitors over the most popular flight routes.
It wasn't just the cowboys who helped shape the Wild West.
"TweetStay" matches mobile users with independent boutique hotels via Twitter.
The hike in entrance fees is a part of a nationwide plan to improve the facilities for future generations of visitors.