Record of Lodoss War Online was recently updated with a new patch to bring the Guild Hall System on board. With the new system in place, players will be able to create guild halls for communities over level 50 and at least ten members. Special scrolls and NPCs will allow members instant access to the gulid hall.
Guild Halls also have the unique Guild Dungeon that can be accessed only through an NPC in the hall. It features both Easy and Hard versions, each available on alternate days.
You can learn more on the Record of Lodoss War site.