And the FORTRESS they built here
has never been overcome.
Game of Thrones Season 4, Episode 5
I'd call it a
"Fortress of Solitude for babies."
The Big Bang Theory Season 10, Episode 6
And we need
every FORTRESS we have
Game of Thrones Season 7, Episode 1
Casterly Rock
is an impregnable FORTRESS.
Game of Thrones Season 7, Episode 3
and abandon this FORTRESS
you can no longer hold.
Game of Thrones Season 4, Episode 8