SELECT T1.city FROM city AS T1 JOIN hosting_city AS T2 ON T1.city_id  =  T2.host_city GROUP BY T2.host_city ORDER BY count(*) DESC LIMIT 1
Which city has hosted the most events?
SELECT T1.city FROM city AS T1 JOIN hosting_city AS T2 ON T1.city_id = T2.host_city GROUP BY T2.host_city ORDER BY count ( * ) DESC LIMIT 1
select t1 . city from city as t1 join hosting_city as t2 on t1 . city_id = t2 . host_city group by t2 . host_city order by count ( * ) desc limit value
Which city has hosted the most events ?