Iglesia Compañía de Jesús, national monument of Chile

Iglesia Compañía de Jesús is a neoclassical church at the foot of Cerro Larraín in Valparaíso, built in reinforced concrete between 1899 and 1901 by architect Nicanor Marambio. Its facade has a triangular pediment with an IHS emblem and the inscription "AL CORAZÓN DE JESÚS AÑO 1900", supported by six Corinthian columns and round-arched doorways with green doors. A central octagonal-based tower with a grey ribbed dome and clock faces rises above.

The Jesuits have been present in Valparaíso since the 17th century; this church was built in 1899-1901 to replace an earlier structure destroyed by flooding. The building withstood the strong 1906 earthquake due to its sturdy reinforced concrete construction and was declared a National Monument in 2003.

The church is dedicated to the Sacred Heart of Jesus, as the facade inscription "AL CORAZON DE JESUS AÑO 1900" and the IHS emblem in the pediment indicate. The Jesuits have been present in Valparaíso since 1659, and this is their fourth church in the city. The interior preserves a crypt of Jesuits who died in Valparaíso and of founding benefactors.

The church closes the eastern end of Avenida Pedro Montt, on Eusebio Lillo street at the foot of Cerro Larraín, parallel to Avenida Argentina. Sunday Eucharist is at 12:00 and 19:00 from March to January; in February only the midday Sunday Mass is held. The 2018 provisional ceiling of the central nave keeps the temple open.

Architect Nicanor Marambio designed the church with an octagonal tower that is visible from a distance and stands out distinctly from the surrounding cityscape. The reinforced concrete structure from 1899 was a progressive solution at the time to resist earthquakes in this seismically active region.