The 'Capilla Abierta' was designed without a roof to accommodate large numbers of Indigenous converts who were accustomed to outdoor worship.
Vicente Guerrero, the second president of Mexico, was held prisoner and subsequently executed within the complex walls.
The site features distinct stone carvings that demonstrate the influence of Zapotec artisans working under Spanish instruction.
The convent was strategically positioned at the crossroads of major trade routes connecting the Oaxaca Valley to the Costa Chica region.
It remains one of the largest examples of 16th-century monastic architecture in the state of Oaxaca.
The convent was abandoned by the Dominican order in the 18th century after a decline in the local population and shifts in regional administration.
The Ex Convent of Cuilapam de Guerrero is a 16th-century Dominican monastery characterized by its famous 'open chapel' (capilla abierta), which remains incomplete. Construction began in 1555 under the direction of Dominican friars but was halted before the roof was finished, leaving a grand, columned skeletal structure. The site served as a vital center for the evangelization of the Mixtec and Zapotec peoples in the Oaxacan valley. In 1844, the Mexican independence hero Vicente Guerrero was executed in this convent, an event marked by a plaque on the grounds. The architecture blends European Gothic elements with Indigenous building techniques and styles. The complex includes a large atrium, a main church, and remnants of the cloister. The site is currently maintained by the National Institute of Anthropology and History (INAH). It functions as a preserved historical monument rather than an active religious house of worship.
The interior of the open chapel, capturing the repeating arches against the sky.
Bring a hat and sunscreen, as the vast, open-air structure offers very little shade.
Walk the perimeter of the open chapel to see the transition between Spanish architectural intent and Indigenous masonry techniques.
Visit during the weekday to avoid the increased crowds that arrive during the weekend.
Avoid relying solely on ride-sharing apps for the return journey, as availability can be sporadic in the immediate vicinity of the convent.
Closed on Mondays.
Respectful behavior is required; keep voices low and do not climb on the stone ruins or altar structures.
