All polished up

unique homes bank vault door

The old brass and the steel vault doors only need to be cleaned with a bit of Windex. "They have always looked the same, even when I was working here," she said.

But Calhoun found the marble and granite walls covered with layers of dark grime. They cleaned up real nice, though, even revealing the veining in the marble.

The walls are three-feet thick and keep the home cool in the summer and warm in winter.

First published November 1, 2013: 11:04 AM ET

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