People 'perched themselves' on the railing [=people sat on the railing] to get a better view.
He stood there in his coat, a small hat 'perched' on/atop his head.
The castle 'is perched' high in/among the hills of Scotland.
(..) You're already a corpse. I just need a little top-up. / There's no time!!! We take my Blood Bag. We'll take my Blood Bag and string him to the lancer's perch. It's got a muzzle on it. It's a raging feral!! / That's right! High-octane crazy blood filling me up. If I'm gonna die... (..)2015 Mad Max: Fury Road