Parroquia San Ignacio de Loyola is a Jesuit church in Montserrat, at Bolívar 225 in central Buenos Aires. A church has stood on this site since 1675, and the present building is among the city’s oldest surviving landmarks. Inside, look for the floor mosaic and the spacious, quiet interior. Guided tours go beyond the main church, taking visitors up to the towers and roof and down into underground tunnels. It is a thoughtful stop near Plaza de Mayo, whether you come to explore the building or sit quietly.
A Jesuit church in Montserrat
San Ignacio de Loyola stands at Bolívar 225 in Montserrat, close to Plaza de Mayo. A church was established on the site in 1675, when the Jesuits were in Buenos Aires. The original adobe building gave way to the present church, which was inaugurated in 1722 and completed in 1734.
The church is considered the oldest religious building in the Autonomous City of Buenos Aires. Its early date and survival make it a notable remnant of the city’s colonial period. Jesuit architects built it in the Baroque style, as part of a larger Jesuit complex associated with the Block of Enlightenment.
Inside the church
The interior is spacious and provides a quiet setting for prayer or reflection. Notice the floor mosaic, one of the details that stands out underfoot. The building has undergone extensive restoration, including work on its interior and exterior.
San Ignacio remains an active parish. Visitors who wish to see the church in use can attend Mass, while those looking for a closer architectural visit can join a guided tour.
Towers, roof and underground tunnels
Guided tours explore parts of the church that are not part of a simple visit to the main interior. The route can include the towers, the roof and underground tunnels. One account describes a tour lasting around two hours; tours may be conducted in Spanish, so check the language before booking if that matters to you.
The tunnels connect the visit to the city’s colonial past. Underground passages in this area were used to cross beneath Plaza de Mayo. Advance tickets are recommended for visits that require them.
Preguntas frecuentes
Where is San Ignacio de Loyola Church?
It is at Bolívar 225 in the Montserrat neighbourhood of central Buenos Aires, near Plaza de Mayo.
What can you see on a guided tour?
Tours can include the church’s towers, roof and underground tunnels. They may be conducted in Spanish.
How long does the tour take?
One described tour lasted about two hours.
Can you visit for free?
The church has been described as free to enter. Advance tickets are recommended for visits that require them.
