Nemesis Destiny
Adventurer
Dungeons & Dragons Roleplaying Game Official Home Page - Article (Strongholds)
It's a little light on crunch, as we've come to expect lately, and I think it might have been better off in Dungeon, perhaps, but as someone who owned the 2e Castle Guide, I like it.
Of course it has way less painstaking detail than that arcane tome I mentioned, but that's probably for the best. It offers a good quick guide to including PC-owned strongholds in your campaign, and has several flavourful suggestions and rooms that grant bonuses, such as a library or a magical laboratory.
It's a little light on crunch, as we've come to expect lately, and I think it might have been better off in Dungeon, perhaps, but as someone who owned the 2e Castle Guide, I like it.
Of course it has way less painstaking detail than that arcane tome I mentioned, but that's probably for the best. It offers a good quick guide to including PC-owned strongholds in your campaign, and has several flavourful suggestions and rooms that grant bonuses, such as a library or a magical laboratory.