Dirty air endangers World Heritage Sites
Air pollution can destroy our cultural heritage, including historical buildings and monuments. A recent study under the Air Convention evaluated risks of potential damage and associated costs due to air pollution for 21 UNESCO World Heritage Sites in six countries: Croatia, Germany, Italy, Norway, Sweden and Switzerland.
Corrosion and soiling by dirty air can lead to severe economic losses through high maintenance and restoration costs. For example, the total annual cost of maintenance work from soiling of the limestone surface of the Colosseum in Rome, Italy, was estimated to be about €680,000 per year.
Source: UN ECE press release, 11 May 2020. Link: https://www.unece.org/info/media/presscurrent-press-h/environment/2020/d....