Excuse me, are you asking the question "Where was the Nightingale Prize first awarded by the International Red Cross?" The association first awarded the Nightingale Award in Washington.

According to a search on Haowen.com, we learned that the International Red Cross Organization established the Nightingale Award at the Eighth International Red Cross Conference in 1907.

It is the highest honor award given by the International Committee of the Red Cross in recognition of those who have made outstanding contributions in the field of nursing. It was first issued at the Ninth International Conference of the Red Cross held in Washington in 1912.