
The greatest FORTRESS ever built.
Game of Thrones Season 2, Episode 7

And we need
every FORTRESS we have
Game of Thrones Season 7, Episode 1

...I will be enjoying a blissful evening
in my personal Fortress of Solitude.
The Big Bang Theory Season 2, Episode 21

And the FORTRESS they built here
has never been overcome.
Game of Thrones Season 4, Episode 5

and abandon this FORTRESS
you can no longer hold.
Game of Thrones Season 4, Episode 8