Conversation so far:
where is the champions league final going to be
The 2020 UEFA Champions League Final will be played at the Atatürk Olympic Stadium in Istanbul, Turkey on 30 May 2020.
Where was the last Champion league final played
The 2019 UEFA Champions League Final, which was the last one played at the Wanda Metropolitano in Madrid, Spain on 1 June 2019.
Who won the The 2019 UEFA Champions League Final
Liverpool won the final 2–0, with a penalty which was converted after 106 seconds by Mohamed Salah and a strike by substitute Divock Origi after 87 minutes.

Question: When was the championship first established
Self-contained rewrite: When was the UEFA championship league first established