The quests or missions themselves are given by the NPCs stationed in each building. The Inn, Blacksmith, etc. are each privately instanced little spaces while the outer town itself is shared and split up into different channels depending on how many Vindicates gold players are in each one. This works well enough at keeping the place not-too-crowded, but can making meeting up with friends a difficult task. Luckily, there's little need to actually meet up in Cohen itself, as all of the adventuring will take place in its own separate instanced dungeon. The inside of each building in Cohen is not really a physical space, but more of a rendered space that represents where you're at. The inn for instance shows a bunch of beds and a fireplace. But they're not exactly places to explore.