The Stronghold Builder's Guidebook is a D&D accessory providing DMs and players with a set of rules for the construction and purchase of forts, castles, and hideaways. The book is aimed at players wishing to become members of their campaign's landed gentry and DMs hoping to besiege their players' hard-earned keeps. The book also includes descriptions of over a hundred new pieces of "wondrous architecture" to outfit strongholds with. Expanded by; Construction Journal: The Alqalinde Guildhouse