Everything-proof
Here is the ultimate in defensible space, short of a missile silo.
A cement egg. Obviously fireproof, and also impervious to wind**, rain, snow, termites and quakes. It's on top of a hill, making it floodproof.
That's how you do it.
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**Wind: This particular egg has large windows with big panes. Not good for wind. A tornado or an 80 MPH gust would bust them out and ruin the interior. Ideally you'd want to get ventilation through small ports, thoroughly filtered in HEPA style, and light through something like glass bricks.
Labels: defensible spaces