Perlin noise is now used to help generate building heights, and the
initial building is a tall tower. Might change that. Perlin noise
should also be used to generate regional qualities which are more fine
detailed than biomes alone.

Occasional paths (long thin gardens)

Basement rooms added when required, but I would *quite like* to add the
ability to fit rooms by digging down into the landscape rather than the
current perching atop. Except, of course, being careful with water. That
would obviate the need for basements.