Watch: Drone Footage Shows Greece Underwater Amid Flooding

Widespread devastation in Athens, Greece, was depicted Thursday in new drone footage following heavy flooding and violent storms. The destruction has left many surrounding areas underwater in what Mandra Mayor Yianna Krikouki called a "biblical" flood. Several regions in Greece have faced inclement weather for about a week. The situation escalated when heavy rain resulted in severe flooding Wednesday night. The death toll has risen to at least 16, and at least four civilians are reportedly still missing.