Where was the first Olympic game held?
Where it was held refers to city_name; the first Olympic game refers to id where MIN(games_year);
SELECT T2.city_name FROM games_city AS T1 INNER JOIN city AS T2 ON T1.city_id = T2.id INNER JOIN games AS T3 ON T1.games_id = T3.id ORDER BY T3.games_year LIMIT 1