Ex Convento de la Natividad, Tepoztlán

The Ex Convento de la Natividad was built between 1555 and 1580 by Dominican friars using forced indigenous labor drawn from Tepoztlán's Nahua population, one of fourteen 16th-century monasteries on the slopes of Popocatépetl later inscribed together as a UNESCO World Heritage Site in 1994. Its plateresque entrance facade, carved by local stonemasons, combines conventional Christian iconography, the Virgin, saints, and Dominican emblems, with indigenous solar and floral motifs, evidence of the syncretic visual language that emerged as native artisans reinterpreted European models under missionary direction. The complex follows the standard mendicant plan of the period: a single-nave church, an open atrium for mass outdoor conversion ceremonies, a cloister with ground-floor arcades, and a fortress-like roofline with crenellations echoing pre-Hispanic defensive architecture. Surviving fragments of grisaille murals remain visible in sections of the cloister, depicting Dominican saints and floral border patterns typical of Nahua-influenced monastic decoration. The bell tower, reachable only by advance reservation due to the fragility of its interior staircase, offers a view over Tepoztlán and the surrounding cliffs of the Sierra del Tepozteco. INAH manages ongoing conservation of the atrium cross and the facade stonework, both showing centuries of weathering from the valley's humid microclimate. The monastery today functions as a museum and cultural site alongside an active adjoining parish church, with the atrium regularly used for the town's Carnival and patronal festivities.