Professor Dr. Her Royal Highness Princess Chulabhorn, President of the Chulabhorn Research Institute, visited the Swiss Confederation from February 16 to 23, 2012. During the visit Her Royal Highness Princess Chulabhorn joined the discussion with the World Health Organization in Geneva, Switzerland, regarding Environmental Health issues relevant to the mission of the Chulabhorn Research Institute in research and capacity building of science personnel, the Institute being a WHO International Collaborating Centre in Environmental Health and Toxicology, and in Her Royal Highness’ capacity as Head of the Thai delegation to the United Nations Conference of Sustainable Development 2012 (Rio+20) to be held on June 20-22, 2012 in Rio de Janeiro, the Federative Republic of Brazil. Her Royal Highness Princess Chulabhorn departed on Swiss International Airlines Flight LX181 from Suvarnabhumi Airport in Samut Prakan Province on Thursday 16, February 2012 at 23.40 hours. She returned by the same airline on Flight LX180, and arrived at Suvarnabhumi Airport on Thursday 23, February 2012, at 15.30 hours.