BOC: magical casement

[Clore]

Imaginos, "Les Invisibles":

The magical casement
Visions of a parallel world.

Compare Keats, "Ode to a Nightingale":

The same [song] that oft-times hath
Charm'd magic casements, opening on the foam
Of perilous seas, in faery lands forlorn.

A casement is a window that opens on hinges.

There was also, I believe, an anthology of fantasy poetry title The
Magic Casement.

Dan Clore