Charleston, South Carolina, lives under a triple threat of disaster: earthquake, hurricane and tsunami. Actually, make it four - flood, too.
These people are survivors, and it shows in their historic buildings.
If you walk through downtown Charleston, you will see buildings with strange metal objects on the walls. Everything in Charleston has a story, and these objects are no exception.
On the afternoon of September 1, 1886 a 7.3 magnitude earthquake hit Charleston. Almost every building in the city was damaged, and damage extended as far north as Maine and as far west as Iowa.
Back in 1865, in the closing months of the United States Civil War, Union troops had burned down a lot of Charleston (the city where the war started). Times had been hard. Even by 1886, the city, and the people, didn't have many resources to rebuild.
The Peter Bocquet House, above, dates from 1770 and would have been lost to history if not for what the people of Charleston had to do out of necessity.
No one knows if these "earthquake bolts" will work until the next "big one" comes.