帝王蝶生物圈保护区

The 56,259 ha biosphere lies within rugged forested mountains about 100 km northwest of Mexico City. Every autumn, millions, perhaps a billion, butterflies from wide areas of North America return to the site and cluster on small areas of the forest reserve, colouring its trees orange and literally bending their branches under their collective weight. In the spring, these butterflies begin an 8 month migration that takes them all the way to Eastern Canada and back, during which time four successive generations are born and die. How they find their way back to their overwintering site remains a mystery.

国别	墨西哥 Mexico
中文名称	帝王蝶生物圈保护区
英文名称	Monarch Butterfly Biosphere Reserve
遗产类别	自然遗产
登录年份	2008
选入标准	(vii)

遗产范围包括：​

- Cerro Altamirano

- Chincua-Campanario-Chivati-Huacal

- Cerro Pélon