You may have seen these images before. At the dentist’s office, in the lobby of a law firm, or while you sit on your friend’s couch trying to agree on which movie to watch. As well as being popular stock photos, they are featured in the default screen saver for Apple TV—a device that allows you to stream content to your television. I don’t own one myself, but they are becoming increasingly common, and with them, so is this collection of stunning National Geographic images.

I wanted to share some tidbits about these photos, so you can impress your friends the next time you’re arguing over rom-com or sci-fi. And even if you’ve never seen this screen saver, you’ll still appreciate