Orosi Church, Colonial church in Orosi Valley, Costa Rica.

Orosi Church is a single-storey mission-style building with thick adobe, bahareque and calicanto walls, a triangular white facade and a two-slope tiled roof. A white bell tower stands attached to its northwest side. Inside, three small naves have brick floors and cedar pillars on stone bases supporting a wooden coffered ceiling. The left nave holds the baptismal and Ánimas chapels, and the main altarpiece with the image of Saint Joseph stands in the central nave.

Franciscan missionaries began construction in 1743 and completed the parish structure by 1766, building their convent first to establish a base. This gradual development reflects how the Catholic presence expanded through the Orosi Valley during the 18th century.

The church faces east, unlike most Catholic temples, a reversal explained by a local legend: after floods destroyed two straw chapels, the image of Saint Joseph was said to look toward the Cabécar mountains. The former Franciscan convent, an L-shaped building, now holds the Museum of Religious Art, with pre-Columbian ceramics, colonial paintings and silver objects.

The church and the former convent, now the Museo de Arte Religioso de San José de Orosi, stand together on the same site, with the sacristy on the right linking the two. The museum holds pre-Columbian ceramics, colonial paintings and silver religious objects. South of the complex lies the old cemetery. The building is a single storey at the level of the atrium, entered through an arched opening added in recent times.

The church faces east, unlike most Catholic temples. A local legend says Franciscan friars fleeing the 1709 Pablo Presbere uprising carried the image of Saint Joseph to Orosi; after floods destroyed two straw chapels, the church was built reversed so the image would always look toward the Cabécar mountains.