CREATE TABLE Ref_Attraction_Types (Attraction_Type_Description VARCHAR, Attraction_Type_Code VARCHAR)
CREATE TABLE Tourist_Attractions (Attraction_Type_Code VARCHAR)

Show the description and code of the attraction type most tourist attractions belong to.
SELECT T1.Attraction_Type_Description, T2.Attraction_Type_Code FROM Ref_Attraction_Types AS T1 JOIN Tourist_Attractions AS T2 ON T1.Attraction_Type_Code = T2.Attraction_Type_Code GROUP BY T2.Attraction_Type_Code ORDER BY COUNT(*) DESC LIMIT 1
SELECT "T1"."Attraction_Type_Description", "T2"."Attraction_Type_Code" FROM "Ref_Attraction_Types" AS "T1" JOIN "Tourist_Attractions" AS "T2" ON "T1"."Attraction_Type_Code" = "T2"."Attraction_Type_Code" GROUP BY "T2"."Attraction_Type_Code" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1