A two-story building in central Porto, Portugal, collapsed after a shopkeeper noticed unusual cracks and warned construction workers nearby. The shopkeeper alerted the workers, who were on an adjacent construction site, just moments before the building crumbled. Witnesses report the workers escaped “by seconds,” narrowly avoiding injury or death. Authorities are investigating the cause of the collapse, but initial reports suggest structural issues. No injuries have been reported as a result of the incident. The building’s sudden failure prompted a rapid response from emergency services, who secured the area and began assessing the damage.