Random Game of Thrones Easter Eggs Hidden Throughout the Series (25 items)

(#20) Members Of Mastodon Played White Walkers

The Night King and his White Walkers have an undying appetite for destruction and chaos, which is why it makes sense that three members of metal band Mastodon made cameos as Walkers. When Jon Snow and the Wildlings take on the Walkers, Mastodon members Bill Kelliher, Brent Hinds, and Brann Dailor make their Game of Thrones debut as members of the undead army. asto
(#16) Two Targaryen Kings Lie in the Sept of Baelor
In one corner of the Sept of Baelor, there are two stone crypts for Targaryen kings. You can see the house's signature dragon inscribed in the stone.
(#9) Lena Headey Hinted at Oberyn Martell's Demise Two Months Before It Happened

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A post shared by Lena Headey (@iamlenaheadey) on Apr 3, 2014 at 7:44am PDT

Game of Thrones fans know by now that Oberyn Martell, played by Pedro Pascal, suffered a crushing defeat - literally - at the hands of the Mountain. But two months before we screamed "nooooooo!" at our screens, Lena Headey posted the above photo on her Instagram, which spells it out.
(#11) All That Dragon Woodwork in Kings Landing Is No Coincidence
If you look closely in King's Landing - especially in the council's meeting room and Tommen's bedroom chamber - you'll see a lot of woodwork adorned with dragons. Why, you ask? Old Targaryen furniture is being used even after the Baratheons and the Lannisters took over. There are lots of lions on the newer woodwork, too.
(#1) Littlefinger Predicts All the Major Deaths in Season Four in One Sentence

If things don't work out for Littlefinger in Westeros, he could make a go of it as a fortune teller. While trying to console Robin Arryn after his mom got dropped like a bad habit out the Moon Door, Littlefinger says, "People die at their dinner tables, they die in their beds, they die squatting over their chamber pots. Everyone dies, sooner or later." In that one sentence he predicted the deaths of King Joffrey, Shae and Tywin Lannister.
(#22) Sigur Ros Play at Joffrey's Wedding
There aren't a whole lot of cameos on Game of Thrones, but one worth noting is when the Icelandic trio Sigur Ros plays "The Rains of Castamere" at Joffrey's feast. No one at the party seems too impressed.