Scott Brazelton was planning to build his son Wyatt a tree house in their backyard.
But, he decided to build this complex roller coaster instead, after a trip to Disneyland.
He spent three months designing and building the ride under the guidance of a retired engineer who's published books about backyard coasters.
It cost him about $1,300 to build. The tracks are made with mostly PVC pipe and two-by-fours put together.