Mission Santos Apóstoles San Pedro y San Pablo, Jesuit mission and archaeological site in Apóstoles, Argentina

Mission Santos Apóstoles San Pedro y San Pablo is a Jesuit mission site and archaeological landmark in the city of Apóstoles, in the province of Misiones, Argentina. A few stones from the original structures are still visible along Avenida 9 de Julio, near the General Manuel Belgrano stadium.

The mission was founded in 1632 by Pedro Alfaro within the Jesuit province of Paraguay. It was refounded in 1652 and abandoned in 1767, when the Jesuits were expelled from all Spanish domains including the overseas territories. It was destroyed in 1817. The urban plan of Apóstoles now overlaps the old settlement, and only a few traces remain along Avenida 9 de Julio.

The mission's name honours the apostles Peter and Paul, and the town of Apóstoles takes its name from them. The church of San Pedro y San Pablo, built in 1926, has foundations of itácurú stone taken from the Jesuit ruins. On 29 June the community celebrates the feast of the two saints with processions and open-air events.

The remaining stones of the old mission sit along Avenida 9 de Julio and are easy to reach on foot since they are part of the everyday urban layout of Apóstoles. A daytime visit works best, as the site sits in an open area of the city with good natural light.

The 1926 church was built by Martín Sviderski using itácurú stones taken directly from the Jesuit ruins for its foundations, about 3 feet (1 meter) deep. The city grew so fully over the original mission that its historic ground now lies beneath ordinary streets and buildings.