Iglesia de Guacarhue, Historical church in Quinta de Tilcoco, Chile

The Iglesia de Guacarhue stands facing the Plaza de Guacarhue in Quinta de Tilcoco. It has an L-shaped plan with two naves of similar size that intersect at the main altar. Its walls are adobe, the roof is clay tile, and corridors run along the sides to temper the heat.

Built around 1778–1779 to a design by Italian architect Joaquín Toesca, also author of the Palacio de La Moneda and Santiago's Metropolitan Cathedral, it is considered a twin of the church of Pichidegua. The 1835 Concepción earthquake forced a reconstruction that kept Toesca's dimensions. The 2010 earthquake brought down about 80% of the building; restoration by architect Patricio Arias was completed and the church reopened in January 2014. It was declared a National Monument on 16 September 1991.

The church faces the Plaza de Guacarhue, itself declared a zona típica. Its layout follows local building customs: plain volumes, adobe walls, clay-tile roofs and corridors that temper the heat. The two similar naves cross at the main altar, giving the building its L shape.

The church stands directly in front of the Plaza de Guacarhue, itself declared a typical zone, so the temple and square are seen together. The 2010 earthquake brought down about 80% of the building; the restoration led by architect Patricio Arias recovered the main nave, the bell tower and the men's chapel, and returned the original par y nudillo roof framing. Reinauguration took place in January 2014, after work covering more than 800 square metres, including the adjoining chapel, the paving and the lighting of the Plaza de Los Tilos.

The 2010 earthquake brought down about 80% of the building. The restoration led by architect Patricio Arias, through the Subsecretaría de Desarrollo Regional y Administrativo's "Puesta en Valor del Patrimonio" programme, recovered the main nave, the bell tower and the men's chapel, and returned the par y nudillo roof design. It was reopened in January 2014.