All castles in Heroes 3.

Interesting name for the Tower - "Winter Castle" ;)
The combination of the Tower town and the Swamp is very interesting... usually, if people play as the Tower, they can't stand the Swamp...:o

Indeed, an interesting combination... when I started playing Heroes III, I was really into the Swamp, but then I cooled off (probably not without the influence of the "winter town" :) ) and switched to the Tower...