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.
(..) Advanced teams will be all over the Veterans Building. Every window and roof within yards will be scoped and cleared. We need to find another perch with a clear line of sight, and we need to find it now. I want you to get on the FAA database, pull a flight plan for me. It's a Hawker , (..)2016 TvShow: The Blacklist Title: Alexander Kirk (No. 14): Conclusion Season: 3 Episode 23