Popocatépetl-Iztaccíhuatl National Park

As Mexico's first national park, established in 1935, Popocatépetl-Iztaccíhuatl National Park protects the nation's two highest peaks: the active volcano Popocatépetl at 5,452 meters and the glaciated Iztaccíhuatl at 5,286 meters, both visible from Mexico City on clear days. The Iztaccíhuatl summit circuit, traversing permanent snowfields, and the Paso de Cortés between the volcanoes provide high-altitude hiking more dramatic than #3's jungle trails, featuring altitude gains exceeding 1,000 meters and glacier views unmatched in Latin America.