Impenetrable 10,124 sq.ft. Anti-Zombie Stronghold for $10,900,000

That's right. It may not be just hype. The zombie apocalypse could be just around the corner. Don't worry about plunging yourself deep into debt to pick up this gem of a home, because once the zombies come, there won't be a bank to come knocking on your door.
Pertinent information:
This insanely symmetrical, moat-surrounded masterpiece was designed by architect Charles Sieger. While it lacks a working drawbridge, simply destroying the only path that leads into the compound would be a logical first step.