[u][b]Midnight City[/b][/u]

An underground (or possibly tucked away in its own stable pocket dimension) city, location unknown, but accessible from various portals typically found in dungeons or isolated stone circles for those who have a key. 

It's a hidden marketplace for items you cannot find anywhere else, and it swarms with all sorts of beings. 

There are two rules in this city - 

1. No violence. No matter what, everyone in the city is safe from each other, lest they awaken the wraith of the Guardians or their golem minions.
2. Any claims made by the seller of any being, creature or object must be true. Any falsehood [i](but not omissions)[/i] will be fined the first time. Pray you never find out what happens with a repeat offense.