15. Cersei blows up the Sept of Baelor with Wildfire (GOT Season 6, Ep 10)

The GOT color palette rarely deviated from mud browns and burlap taupes, save for the occasional visit from a Dornish royal and the regular spilling of blood. Which is why Wildfire proved so visually stunning. If you thought dragons were ridiculous, how about a barrel of highly explosive primordial plutonium, capable of leveling all of Flea Bottom? Cersei could have easily ordered the murder of the High Sparrow, but she required something far more baroque—a statement, if you will—to uproot the extremism that had taken hold in King’s Landing, something that would send a clear message across the kingdom: merciless kings are one thing, but charismatic cult leaders are quite another. In terms of sheer scale, there was no turning away from the spectacle of the Sept engulfed in a radioactive glow, taking with it Margaery, Loras, the High Sparrow, and countless bystanders. As far as denouements go, we can only assume it would have been (blessedly) fast for those trapped inside, though pity those on the outskirts of the blast site, forced to deal with the charry aftermath. The sheer scale of the massacre stood in stark relief to the low-key reaction of sweet, guileless Tommen who, numbed by the sight, simply jumped from a window of the Red Keep.