Reserva de la Biosfera Mariposa Monarca is a unique protected area spanning Michoacán and Estado de México, famed for its critical overwintering habitat of the monarch butterfly and offering a rare wildlife viewing experience amidst pristine pine-oak forests.
Located in the Trans-Mexican Volcanic Belt, the Reserva de la Biosfera Mariposa Monarca encompasses a network of forested mountains across the states of Michoacán and Estado de México. Established in 1980 and declared a UNESCO World Heritage Site in 2008, this biosphere reserve protects the crucial overwintering sites of the eastern monarch butterfly population, which migrate thousands of miles from Canada and the United States each year. The reserve is characterized by high-altitude pine, fir, and oyamel forests that create a cool, moist microclimate essential for monarch survival during winter months. Visitors to the reserve can hike along well-established trails leading to butterfly colonies clinging to tree branches in spectacular clusters, creating an unforgettable natural spectacle. The area also supports diverse wildlife including deer, birds, and various endemic plant species. Nearby local communities play an important role in conservation efforts and provide cultural tourism, including artisan crafts and guided tours. The reserve’s rugged terrain includes viewpoints offering panoramic vistas of the forests below and the butterfly roosts. Visiting between November and March maximizes chances of witnessing this extraordinary natural phenomenon. The reserve promotes environmental education, scientific research, and sustainable tourism practices. Despite its popularity, much of the reserve remains remote and tranquil, perfect for nature lovers and photographers seeking to connect intimately with this iconic migratory event.
El Rosario Sanctuary – one of the largest monarch butterfly colonies
Oyamel fir forests providing vital overwintering habitat
Panoramic mountain vistas overlooking the butterfly roosts
Local indigenous communities offering cultural tours and crafts
The largest and most accessible colony site where millions of monarch butterflies cluster in dense, orange tapestries across fir trees.
A quieter, less crowded site offering rugged trails and intimate views of butterfly clusters amid pristine forest.
The unique tree species providing the cool microclimate critical to monarch butterfly overwintering survival.