So I'm debating trying to make a typical city/castle map, and I was doing some fact gathering and stumbled across this site:

NPS - Fort Vancouver


It has the exact measurements of the outer walls of the fort, plus all kinds of historical stuff about how the fort could have grown over the years.. the fort is believed to have doubled in size in only 2 years, and lots more since then

PLUS if you click the in-article source links, there's lots of neat little "map" sketches actually drawn by/for military leaders during their respective time periods.

I thought it was really awesome and wanted to share it with everyone - hope this is the right place to do so!