Board Thread:News and Announcements/@comment-98.247.74.19-20130529180604/@comment-99.70.91.161-20130613180633

The brown building is the quest outpost. From there you can send certain dragons on different quests, and when they come back they have a chance to bring back a certain prize. Just look it up on this wiki, the info's probably more detailed and accurate. My fire dragon is always out on quests to bring back coins :)