Castle in the sunset

Sun sinks into ocean,
Rays crash upon the sand,
Waves stretch to reach the shore,
Then quickly run away from land.
Our setting star shines a path
Across the water's sky,
It glistens on this liquid,
To cross it, so few try.
The clouds create a castle,
With towers stretching high,
Shadows deepen stairways,
And room decor is dyed.
A mote surrounds this palace,
With soldiers made of sun,
A fiery red hot dragon,
To protect the special one.
A temple risen out of nowhere,
But it won't be there for long,
Pinks and oranges fade to purples,
Now soon it will be gone.
And with a flash of green,
All residents must reside,
Back to where they came from,
Castle sinks to tide.