The previously unseen pictures document a number of important turning points from season eight episode six, aka the finale, aka The Iron Throne. One of those is the moment Daenerys oversees the Unsullied army after she razed King’s Landing to the ground.
Elsewhere in the episode, one picture shows Brienne of Tarth, played by Gwendoline Christie, paying tribute to her late lover Jaime Lannister as she wrote in The Book of Brothers.
A more light-hearted snap documents the King’s counsel starting their plans for the Seven Kingdoms as they discussed the prices of brothels. Because, y’know, why not?