And the FORTRESS they built here
has never been overcome.
Game of Thrones Season 4, Episode 5
And we need
every FORTRESS we have
Game of Thrones Season 7, Episode 1
and abandon this FORTRESS
you can no longer hold.
Game of Thrones Season 4, Episode 8
...I will be enjoying a blissful evening
in my personal Fortress of Solitude.
The Big Bang Theory Season 2, Episode 21
We are about to enter Atzel's FORTRESS.
The Big Bang Theory Season 2, Episode 3