This song is about nostalgia of your youth. The song tells stories of when he was younger and growing up. It's about him growing older but not forgetting about those he are up with. In the bridge he tells where his old friends are now and how they "raised him". There's always that feeling of nostalgia when going back to where you grew up. Just driving down that road you always drove down can provoke so many memories and emotions from the past. In a way the castle on a hill is a metaphor. Yes, they literally could be watching the sunset over the castle on the hill, but I think it has a deeper meaning. He's almost watching his past set in a glorious tone, sense "castle on the hill". His past is setting and he now is on a new chapter in his life.
This song is about nostalgia of your youth. The song tells stories of when he was younger and growing up. It's about him growing older but not forgetting about those he are up with. In the bridge he tells where his old friends are now and how they "raised him". There's always that feeling of nostalgia when going back to where you grew up. Just driving down that road you always drove down can provoke so many memories and emotions from the past. In a way the castle on a hill is a metaphor. Yes, they literally could be watching the sunset over the castle on the hill, but I think it has a deeper meaning. He's almost watching his past set in a glorious tone, sense "castle on the hill". His past is setting and he now is on a new chapter in his life.