Built into the side of a cliff, overhanging a river, is a bunker, with the capability to survive many types of disasters, having self-sustaining abilities such as hydroponic farms, a research lab, medical bay, multiple levels, even the ability to seal off sections of the house if compromised, and a neat security system that will attack violent intruders with something like a railed machine gun or plasma cannon. There is also a cutting edge power plant that powers the "house". I also thought recently, while I'm at this, why not put a spacecraft hangar below the bunker, or attached somewhere. Or even make the house a part of a large spacecraft in some manner, to where if a really bad disaster comes about, the spaceship just breaks apart the mountain and blasts off in like the coolest thing I've ever seen (though I will have to have some video cameras set up on remote live feed just for that purpose).
Anyway, not entirely my idea... but its a fun idea, and something that probably will never get built in the way I described it here.
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Skywatcher
-"Look to the future, be aware of the present, and beware of the past." -Me