The flag mast stands approximately 50 meters tall, designed to support a flag measuring roughly 14 by 25 meters.
The monument is maintained by the Mexican Ministry of National Defense (SEDENA) as part of the country's monumental flag program.
The location is situated at a high-elevation junction that experiences significant wind currents, necessitating regular inspections of the fabric and mechanism.
The flag is occasionally replaced during ceremonies, often involving military personnel from the nearby regional barracks.
The site is located adjacent to the Pedregal area, a geological region formed by the volcanic eruption of Xitle thousands of years ago.
The Bandera Monumental San Jerónimo is one of several large-scale flags commissioned as part of a national identity project to increase patriotic presence in major urban areas. Located at a prominent roundabout in the San Jerónimo Lídice neighborhood, the site features a massive Mexican flag atop a tall steel mast. The monument serves as a landmark for those traveling through the southern corridor of Mexico City near the Anillo Periférico. It sits in a high-traffic area characterized by the transition between the dense urban environment and the ecological zones of the southern boroughs. The flag is periodically lowered for maintenance or replaced due to high-altitude winds and wear. The installation represents the administrative effort to claim public space with monumental symbols of the Mexican state.
From the pedestrian bridge crossing the Anillo Periférico, providing an eye-level view of the flag mast.
View the monument from the pedestrian bridges or sidewalks that overlook the roundabout for the best perspective.
Exercise caution as this is an active, high-traffic vehicle interchange with limited pedestrian infrastructure.
Combine your visit with a trip to the nearby ecological reserves if you are exploring the southern part of the city.
Do not attempt to cross the busy Periférico highway on foot; stay on the designated pedestrian paths.
The flag is occasionally removed during periods of high wind or for scheduled maintenance by military personnel.
