We are about to enter Atzel's FORTRESS.
The Big Bang Theory Season 2, Episode 3
...I will be enjoying a blissful evening
in my personal Fortress of Solitude.
The Big Bang Theory Season 2, Episode 21
and abandon this FORTRESS
you can no longer hold.
Game of Thrones Season 4, Episode 8
Welcome to my FORTRESS of shame.
The Big Bang Theory Season 9, Episode 19
I'd call it a
"Fortress of Solitude for babies."
The Big Bang Theory Season 10, Episode 6