This is where Black Smith players will put there forges. each player can make different weapons, armor, items, etc to sell or trade. forges can also be entered during other play. you will have a forge on each floor that your level allows in each main town.
These creatures are the monsters that roam outside of town and swarm the labyrinths. They are mostly weaker then the boss of the floor they are on, but there is the occasional super mob.