For alpha release, the following dungeons should generate in the world, with mobs and loot:

• Castles STARTED
• Snow Castles STARTED
• Pirate Ships STARTED
• Pirate island UPCOMING
• Pirate airship FINISHED
• Nether Cities BUGGY
• Stronghold STARTED
• Desert Stronghold STARTED
• Volcano STARTED
• As-yet unnamed End structures. UPCOMING