and you saw similar conditions in 1989 in portions of the marie yarks watson vil. >> shot well a block same damage in '06 based on historic pictures, you saw the rebuilt building in the exact same shape. >> that's great and we're going to one more spot. here we are in one of san francisco's most historic neighborhoods on jackson street between montgomery and sampson. i understand from pat buscovich when san francisco was built, there were no addresses; is that right? >> no. actually your address was jackson between mont dwommery and sampson. that's all you got since there were so few people here. >> everybody knew who everybody was. this might have been on the wharf. we're right at the edge of the bay. if we take a look you can see on the alley here, this curvy line, which is one of the indicators of the edge of the bay, many of the streets down in this part of town were originally wharfs. >> the ships would come in forÑa few years until the '4 9 gold rush they would offload and theseñr were wharfÑi house buildings. gold hit and the ships never left. >> so we're talking about earthquak