This 93-year-old went to all 63 US national parks

Brad Ryan didn't see his grandmother for 10 years after his parents divorced. The two reconnected and Brad decided to take Grandma Joy on a trip to see a mountain for the very first time.

She did so well that they decided to embark on the challenge of visiting all 63 US national parks. It took the duo nearly eight years to complete the task.

Producer: Grace Conley