Greymont Castle is a rectangular fortress built upon a rocky hill. The entrance to the castle is protected by a gatehouse with a drawbridge and portcullis. A barbican with a ramp guards the end of the drawbridge.

Inside the walls there is a large keep with a tower, a great hall, and several sheds and workshops.

Including the barbicon and ramp, Greymont Castle is 22.5" x 27.5" (72 x 88 studs) and stands about 18" high.

Greymont Castle is inspired by Goodrich Castle in Herefordshire, England, but it is not intended to be an exact reconstruction.