I realize this scene never happened in the books, but with all the times Viserys talked about their home and the dragons from their family’s history, I think the image of Daenerys being able to imagine what he’s describing is wonderful.
"Once there was a young man, who like you, sat in this very hall, walked this castle’s corridors, slept under its roofs. He seemed to all the world a student like any other. His name: Tom Riddle. Today, of course, he’s known all over the world by another name, which is why, as I stand looking out upon you all tonight, I’m reminded of a sobering fact: Every day, every hour, this very minute, perhaps, dark forces attempt to penetrate this castle’s walls. But in the end, their greatest weapon…is you.”
Amy: I just worry there’ll come a time when you never turn up. That something will have happened to you and I’ll still be waiting, never knowing. The Doctor: No. Come on, Pond. You’ll be there ‘til the end of me. Amy: Or vice versa.