The Strangest and Most Tragic Ghost Towns from Around the World
io9.com
io9.com
We tried to visit (it's illegal to go there), but for some misterious reasons it was all surrounded by military checkpoints, so we could only pass by. I envy those who managed to get there before.
http://en.wikipedia.org/wiki/Oradour-sur-Glane
The wikipedia article is unclear on the exact number, but mentions two dozen or so survivors in total, rather than a single one.