The fantasy drama, which is filled with unexpected twist and turns, dragons, army of undead and various noble house fighting for the Iron Throne, has become a major cultural phenomenon in the last seven years.
"Thrones" just finished its season seven and Harington, who plays fan-favourite Jon Snow on the HBO show, believes the finale was one of the best episodes in the series as the key characters finally came face-to-face for the first time.
"I think the major part of that episode, which really was strange for all of us as actors, was being in that dragon pit and everyone being there just facing each other, like every character."
When asked after the seventh season and going into the eighth and final one as this all comes to an eventual end, how he feels, Harington says it would be a poignant moment.
"I think I just want to do a really good job in the final season. I want to finish it well. That's what I care about right now.