Welcome to my FORTRESS of shame.
The Big Bang Theory Season 9, Episode 19
Welcome to my FORTRESS of solitude.
The Big Bang Theory Season 8, Episode 7
I'd call it a
"Fortress of Solitude for babies."
The Big Bang Theory Season 10, Episode 6
We are about to enter Atzel's FORTRESS.
The Big Bang Theory Season 2, Episode 3
and abandon this FORTRESS
you can no longer hold.
Game of Thrones Season 4, Episode 8