Don Wildman, host of Mysteries at the Museum, Monumental Mysteries and Greatest Mysteries, is well-traveled when it comes to our country’s national parks. To celebrate the National Park Service turning 100 this year, he’s sharing his top five favorite national parks and the reasons why he loves them.

From his first solo backpacking trip to family vacations, his top picks hold special memories. Some parks you might guess, and some might surprise you. Watch the video to see which one is his all-time favorite.