2009 L'Aquila earthquake region saw dozens of significant aftershocks following the main earthquake. The strongest, which hit at 19:47 CEST on 7 April, measured magnitude 5.3 and caused further damage. According to the Italian National Geophysics Institute director Boschi, the aftershock epicentres migrated south-east, thus lessening the risk of further major shocks near populated areas. Aftershocks caused safety problems for rescue crews searching for injured victims trapped in precarious structures in the historic center of L'Aquila, a medieval city. Using cranes and backhoes to remove loose bricks and broken timbers, the crews were aware that even a small aftershock could have triggered the
Architecture of the medieval cathedrals of England towers erected last. Architecture of the medieval cathedrals of England The medieval cathedrals of England, which date from between approximately 1040 and 1540, are a group of twenty-six buildings that constitute a major aspect of the country’s artistic heritage and are among the most significant material symbols of Christianity. Though diversified in style, they are united by a common function. As cathedrals, each of these buildings serves as central church for an administrative region (or diocese) and houses the throne of a bishop (Late Latin "ecclēsia cathedrālis", from the Greek, καθέδρα). Each cathedral also serves as a regional centre and