- The Stone Door: Giving the castle's name, it is a large stone and iron gate on the north side of the Wall. It has not been used since the castle was abandoned, for all the gates of the abandoned wall castles were barred with ice and stone.
- The Lord’s Tower: It is a stout and sturdy construction, primarily made of stone. It has suffered very little from the long years of abandonment.
- The Great Hall: It is not unlike the Lord’s Tower, built out of stone, with a wooden roof atop. Large glass windows, now no more than holes barred off with wood, used to line the northern wall of the hall that could host a large amount of brothers of the Night's Watch.
Stonedoor was a solo project completed herm1456. Construction started on the September 19, 2015 and it was completed less than a month later, on October 13, 2015. (See Forum) The current build replaces a older version completed by Roble0812 (See Old Forum) in 2013.
Stonedoor was inspired by Castle Black, the primary wall castle, which was recently finished at the time. The layout and condition of Stonedoor is discussed in the books and followed closely when planning the redo of the castle.