This description provides information on the total number of World Heritage Sites in Danger as of 2019. According to the United Nations Educational, Scientific and Cultural Organization (UNESCO), there are currently 55 World Heritage Sites in Danger. These sites are considered to be at risk due to natural disasters, armed conflicts
From Wikipedia
World Heritage Sites are landmarks and areas with legal protection under an international treaty administered by UNESCO for having cultural, historical, or scientific significance. The sites are judged to contain "cultural and natural heritage around the world considered to be of outstanding value to humanity".