the four-story guinness building pancaked and tipped over, it's home to 200 office workers. firefighters rescued this woman from the roof. she was in remarkably good condition. rescuers also used a crane to pluck people from a balcony 17 stories up after the building's stairwells collapsed. also badly damaged, the city's famed cathedral. this local reporter was able to take a look inside. >> the whole side has completely caved in. where the tower was, we could go upstairs and take a view of the place. wow. >> reporter: along with the collapsed buildings, power has been knocked out in many places. roads have buckled, and the city has run out of ambulances.