All castles in Heroes 3.

If I'm playing seriously, I choose Dungeon; I also enjoy playing as Inferno and Necromancer. I don't like playing as Fortress or Rampart. Rampart – besides elves and centaurs, there's not much else, and the wooden structures are nothing special. Pegasi are terrible, and dragons don't live up to their cost... although Rampart looks cool. Swamp creatures are also not very effective; only the upgraded bulls are decent. And visually, they all seem... off. In my opinion, Dungeon is the strongest and most cunning faction, with well-developed magic.