et l ; ▁ 5 . ▁Luis ▁Bar rag an ▁House ▁and ▁Studio ; ▁ 6 . ▁Te ot ih u ac an ; ▁ 7 . ▁Mon arch ▁But ter fly ▁B ios phere ▁Reserve ; ▁ 8 . ▁Aqu ed uct ▁of ▁P adre ▁Tem ble que ▁ ▁Leg end : ▁ ▁World ▁Cultural ▁Heritage ▁Site ; ▁ ▁World ▁Natural ▁Heritage ▁Site ; ▁ ▁World ▁Cultural ▁and ▁Natural ▁Heritage ▁Site ▁( M ixed ) ▁ ▁Note : ▁The ▁Cam ino ▁Real ▁de ▁T ierra ▁Ad ent ro ▁ins cribed ▁property ▁en comp ass es ▁ 5 9 ▁cities , ▁towns , ▁brid ges , ▁ha ci end as ▁and ▁other ▁monuments ▁along ▁some ▁ 1 , 4 0 0   km ▁of ▁the ▁route . ▁The ▁point ▁shown ▁on ▁the ▁map ▁is ▁an ▁approximate ▁mid point ▁between ▁historic ▁Mexico ▁City , ▁the ▁southern most ▁site , ▁and ▁the ▁town ▁of ▁Valle ▁de ▁All ende , ▁the ▁most ▁northern ▁site . ▁For ▁a ▁description ▁and ▁location ▁of ▁each ▁site , ▁see ▁the ▁UN ES CO ▁entry . ▁ ▁T ent ative ▁list ▁In ▁addition ▁to ▁sites ▁ins cribed ▁on ▁the ▁World ▁Heritage ▁list , ▁member ▁states ▁can ▁maintain ▁a ▁list ▁of ▁tent ative ▁sites ▁that ▁they ▁may ▁consider ▁for ▁nom ination . ▁N omin ations ▁for ▁the ▁World ▁Heritage ▁list ▁are ▁only ▁accepted ▁if ▁the ▁site ▁was ▁previously ▁listed ▁on ▁the ▁tent ative ▁list . ▁As ▁of ▁ 2 0 1 7 , ▁Mexico ▁maintain s ▁twenty - one ▁properties ▁on ▁its