Interesting Things with JC #364: “The Burbank Aviation Museum” is located in the Portal of the Folded Wings, in Valhalla Cemetery. It's open the first Sunday of each month unless it's a holiday or a rainy day. Free admission 1-3 PM. The Portal of Folded Wings, is a 75-foot-tall "Shrine to Aviation" and is the final resting place of fifteen aviation pioneers.