Warning: Like most of Twitter, this post contains Game of Thrones Season 6 spoilers.
The Game of Thrones opening, besides containing that epically snazzy theme song, can also include important information about the episode itself.
Namely, it tends to list the locations that will appear in the coming hour (in Winterfell's case, it even shows who currently owns it). But until the most recent episode, "The Winds of Winter," there wasn't any sign the sun gizmo that shines in the opening actually exists within the world of the show. But there is now.
And right now, it involves Samwell Tarly, Jon Snow's lovable sidekick played by John Bradley-West. Season 6 has seen Sam heading south to Oldtown to become a maester.
It isn't until the finale that Sam finally arrives at Oldtown's Citadel. When he leaves Gilly, his wildling girlfriend, in the lobby to check out the Citadel's library, he sees the bright, spinning sun-gizmo from the opening credits.