We eventually intend for the player to make their way towards the heart of the old human empire on Cairn and the remains of the capital city. However, they won’t make it there in first release; that will come with later expansions. We actually have a pretty large world map sketched out and the first installment of the game will introduce only a small region of it.
That region will have some diverse environments ranging from swamp, to farmland, mountains, villages, and eventually an industrial town. It is sort of a backwater area though, so there won’t be any really ornate urban buildings yet. This also works for us because we don’t quite have the resources to build a giant urban area with tons of detail, so we want to save that for later when we’re in a better position to execute on it.