The Watchfire Keep - initially created for my adventure "Who Watches the Watchfires" for Kobold Quarterly 18 [link]
I wanted to create a gsetting for a classic capture the flag scenario, that could be useful in lots of different adventures - or double as a starter castle for adventurers setting up their own base. I know I'll be using it in my Kingmaker campaign.
Lots more details on this (and a fantastic spin off) on my blog today: [link]
This map also comes as a map pack, available on Paizo [link]
and RPGNow [link]