Migrating Monarchs

Each year from late November through February, monarch butterflies complete their epic journey from Canada and the northern United States to the forests of central Mexico. At Attesi, you are positioned within this living migration corridor — thousands of butterflies gather in the surrounding oyamel fir trees, turning branches into shimmering curtains of orange and black.

Our guided morning walks take you into the heart of the sanctuary at the optimal time of day, when the butterflies warm in the sun and take flight in great drifting clouds. The sound alone is unforgettable — a soft, rustling hush like rain through leaves, as millions of wings move at once overhead.

Your guide will share the science, the folklore, and the conservation story behind one of nature's most extraordinary journeys. The monarchs return generation after generation to the same forests their great-great-grandparents departed — a phenomenon that has held local communities in awe for centuries and that scientists are still working to fully understand.