CREATE TABLE routes (dst_apid VARCHAR)
CREATE TABLE airports (name VARCHAR, city VARCHAR, apid VARCHAR)

Find the name and city of the airport which is the destination of the most number of routes.
SELECT T1.name, T1.city, T2.dst_apid FROM airports AS T1 JOIN routes AS T2 ON T1.apid = T2.dst_apid GROUP BY T2.dst_apid ORDER BY COUNT(*) DESC LIMIT 1
SELECT "T1"."name", "T1"."city", "T2"."dst_apid" FROM "airports" AS "T1" JOIN "routes" AS "T2" ON "T1"."apid" = "T2"."dst_apid" GROUP BY "T2"."dst_apid" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1