Spiral Cellars Ltd is a company specializes on these watertight, pre-cast concrete wine cellars. It can be installed almost anywhere in your

home.
“…each cylindrical wine cellar relies on the surrounding earth for its in insulation and combined with an ingenious air-flow system, it requires no power to maintain its constant temperature.”

You can have one at your home for $30,000+. More pictures after the break.

[via Toxel]