There actually no chords I just put in what sounded good to me.
INTRO
Bm
VERSE 1
Bm
The day I knew you’d not come back
Am Bm
I built this castle out of glass
CHORUS
But I could never understand
Am
Where the windows and walls began and end
Bm
No, I could never understand
Am
Where the windows and walls began and end
Am and Bm over long solo
VERSE 2
Bm
I built this colonnade of sand
Am
Stretched out like fingers from my hand
CHORUS
Bm
But with the waves coming in
Am
In the morning I had to build again
Bm
But with the waves coming in
Am
In the morning I had to build again
Am and Bm over long outro