Database: books
Question: What is the address that received the most orders?
SQL: SELECT T2.street_name, T2.city FROM cust_order AS T1 INNER JOIN address AS T2 ON T1.dest_address_id = T2.address_id GROUP BY T2.street_number, T2.street_name, T2.city ORDER BY COUNT(T1.dest_address_id) DESC LIMIT 1