Straight from the shinobi beta:
Jiseigakure, the stronghold of Neutrality.
All around you, the people of Jiseigakure move about their business. No one seems to pay much attention to you as they all seem absorbed in their own lives and problems. Along various streets you see many different types of shops, each with a sign out front proclaiming the business done therein. Off to one side, you see a very curious looking rock which attracts your eye with its strange shape and color. People are constantly entering and leaving via the city gates to a variety of destinations.
This is a neutral place to meet for all shinobi. Violence within the city is forbidden and will be enforced by Black Dragon ANBU, who are known to make anybodies life much more miserable...