Warning: contains spoilers forGame Of Thronesseason 7.

Maisie Williams wore a latex mask of David Bradleys face, the rest was all performance.

For it, they built several new sets including the Citadel privy and washroom.

6.Its not just us.

Everybody loves Bella Ramsey, the young actor who plays Lyanna Mormont.

Director Jeremy Podeswa calls her an instinctive acting genius.

Shes a G, says Nathalie Emmanuel.

7.Euron Greyjoys costume was designed to evoke the rock and roll spirit of Keith Richards.

Hes supposed to always be the coolest guy in the room.

Shes just not that into him!

9.Sophie Turner and Gemma Whelan went to the same school, Kings High School for Girls in Warwick.

MartinsA Storm Of Swords.

13.Season seven is the first time weve seen beyond the map room at Dragonstone Castle.

The room was remade for this season to expand it.

The walls on that set can now be removed to provide better shooting access.

The carved stone dragon has been redesigned for this year too.

Dragonstone beach is Zumaia beach.

15.The old Meereen pyramid throne room was adapted into the Dragonstone Castle audience chamber for season seven.

I felt like cabin crew said John Bradley, about Johns trolley.

21.Theres no CG extension on the Dragonstone audience chamber, thats all there in real life.

23.It took Bryan Cogman a little over a month to writeStormborn.

Theyre getting harder to write, says Cogman, as more and more characters are reunited.

You realise that the audience has seen all this.

25.The Dragonstone map room gets incredibly hot.

26.In season six, twenty-three named characters were killed off according to stunt coordinator Rowley Irlam.

27.In season seven, Danys dragons are now the same size as a Boeing 747.

29.Because this season is accelerating towards the endgame, we move a lot quicker, explains Cogman.

It took three make-up artists four hours every day to apply it.

It took four weeks to build the prosthetic.

Any shot over Pilous shoulder onto Gemma was filmed months after those going the other way.

34.There were forty stunt performers on the ship for Eurons attack on Yaras fleet.

That is not an accident, it was painstakingly scripted and shot, confirmed Bryan Cogman.

39.In Missandei and Grey Worms sex scene, Jacob Anderson was wearing a modesty sock on his private parts.

But he doesnt have balls.

So now we know.

But I guess those Direwolves are expensive!

The embers are a practical effect, not added in post-production.

They were boiling hot.

54.The young actors all affectionately named their fur cloaks.

Sophie Turners was apparently named Roger.

59.The cave underneath Dragonstone island is built on a sound stage in Belfast, using polystyrene foam rocks.

The seams of dragonglass around the cave walls was actually bitumen, as used to surface roads.

61.To film the Loot Train dragon attack, there were eight cameras running simultaneously.

62.Many of the stunt performers in the Loot Train attack alternated between playing the Lannister soldiers and Dothraki riders.

Oftentimes they might have been fighting themselves in some of these shots, says director Matt Shakman.

66.There are 419 VFX shots in episode four,The Spoils Of War.

67.When Jaime Lannister falls into the water at the end of episode four, it was shot dry-for-wet.

68.There are more dragon shots in episode four than in all of season six combined.

71.Winter having arrived made it especially difficult to light Winterfell in season seven.

72.The tide on Dragonstone beach was also a real trouble-maker.

73.Dont even get the shows creators started on footprints in the sand.

75.Sixty horses were used for the Dothraki charge at the Lannister army in episode four.

80.The background artists playing the Lannister soldiers and Dothraki army were Spanish and mostly did not speak English.

Emilia Clarke noted the irony that it was Danys first speech to a crowd actually delivered in English.

87.The maesters at the Citadel are intended as a satire on academia.

[The two showrunners first met on a PhD programme in Ireland.]

They all loved working with Broadbent.

92.In season one, filming conditions were so cold they had to digitally erase the actors visible breath.

On the locations recce, it was filled with nudist sunbathers.

But you would never be able to tell says director Matt Shakman.

Glen was at RADA, Flynn was at Central.

He used to kick the shit out of me, says Glen.

Flynn is Godfather to Glens oldest son.

105.If you phone theGame Of Thronesproduction offices, Ramin Djawadis theme music is what youll hear on hold.

Each is framed with ominously bloody meat behind them during the scene.

111.The camera operators and directors have a friendly rivalry over whose shots are used most often in trailers.

Everybody wants their work represented in the season trailers.

112.Gemma Whelan provides a voiceover for each of the horses inner monologues when she does her episode commentaries.

Theyre all Northern and mostly ask for carrots and sugar lumps.

Her voice for Direwolf Nymeria sounds like Jane Horrocks.

113.The Wight bear that attacks the group beyond the Wall in episode six was nicknamed Lumpy on set.

The island theyre marooned on is made of fibreglass and wood.

117.Ser Beric Dondarrions flaming sword is actually two swords, one he draws and one thats lit on fire.

The fire effect is all done in camera, with no VFX.

119.Alan Taylor confirms that Benjen Stark does indeed die after rescuing Jon.

He meets his end here, says Taylor.

I just thought I cant do eight years on this show without shooting this shot.

Its a big moment, said Savage.

121.The opening credits sequences is always exactly ninety seconds.

Whenever they add in a new location to the map, they cut something else out.

So now you know.

124.The Dragon Pit scenes took twelve days to film, during which time the cast became slightly hysterical.

Gwendoline Christie and Kit Harington had an ongoing Mummy/Baby routine between takes.

It was disturbing and very naughty, says David Benioff.

Perhaps the day US election results were announced, or the day of the presidential inauguration?

128.Kit Haringtons ancestor John Harington, invented the toilet.

Thomas Crapper came later, he says.

129.Stunt performers are referred to as stuntees by cast and crew.

They were friends and Peter was part of the reason she took the job.

So far, that wish hasnt been granted.

They went for four in the end but its still a bone of contention between Weiss and Benioff.

133.Throughout Cerseis time on the show, her serving ladies style their hair exactly as she does.

They didnt do it.

138.Dragonstone Castle is designed to incorporate elements of a dragon, sharp edges, scales and teeth.

That set was an historical shipyard in Seville in which part of the seventeenth-century Spanish armada was built.

142.The Dragon Pit set is actually a Roman amphitheatre that would have seated 40,000 people when still complete.

143.Highgarden Castle is actually Almodovar del Rio castle, in Cordoba, Spain.

145.The Winterfell set was not originally built to withstand seven seasons of filming.

146.The Casterly Rock set was adapted from the Riverrun set used in season six.

148.In season 6, there were 11 shots of Dany riding her dragon.

In season 7 there were over 80.

It was a bit wide boy for me and I wanted something softer.