From PDF Introduction
A Stronghold Builder's Guidebook Web Enhancement
The Stronghold Builder’s Guidebook is comprehensive resource detailing everything a Dungeon Master or player needs to design, construct, and play with castles, fortresses, towers, and more. As an example of how to build a stronghold within the context of an ongoing campaign-and as a reasonably priced fortress for your own character’s use-here’s the Alqalinde Guildhouse. This is a tower created by Oriel, a 13th-level wizard in a campaign we’ve got going in the Wizards of the Coast Roleplaying R&D department.
To use this web enhancement, you must already have the Stronghold Builder’s Guidebook-you will need to refer to it as you read along. You also will want to refer to the maps of the completed Guildhouse featured on pages 4 to 6 of this document.
This bonus game material is exclusive to the official DUNGEONS & DRAGONS website.