This is a world that I generated, it's only Pocket sized but it has 1050 years of history. In most embark sites, you'll have 9 towers as neighbors, though there are some spots where you can get 10 at once.

TO INSTALL: just extract the "Tower x10" folder form the zip file, put it into your save folder (DF/data/save) and then change the name to the correct name if needed. (regionX, where X is an unused number in your saves should work.)