It's a build of my map "Kingdom of Talval".

Here is the history of the castle :
"The mysterious red dungeon is perched on the island of Dure-Arbre, but no one knows who built it. It was already present before the arrival of the first Men, and some ancient writings indicate that it was cursed. The red stone it is made of does not seem to come from surrounding quarries, further enhancing its enigmatic character. The first Men considered it as the abode of Lucifer. For a time, the dungeon was abandoned until King Harold II of Talval had it restored in 1161, adding his coat of arms. Since then, a Steward appointed by the kingdom of Talval has been responsible for its administration."

Enjoy