The Church of Saint Francis (Portuguese: Igreja de São Francisco) is the most prominent Gothic monument in Porto, Portugal, being also noted for its outstanding Baroque inner decoration.

The Chapel of St John the Baptist is a notable example, built in the 1530s for the Carneiro family in Manueline style, the Portuguese late Gothic.

In its place, the Commercial Association of the city built the Stock Exchange Palace (Palácio da Bolsa), a magnificent example of 19th century Neoclassical architecture.

The opening is composed of a series of Gothic archivolts; the inner moulding is decorated with an arcade relief of Mudéjar (Islamic influenced) design.

Near the entrance is located the old pantheon for the family of Luís Álvares de Sousa, with an interesting Gothic portal decorated with a coat-of-arms and a dedicatory inscription.

This chapel, by architect Diogo de Castilho, has a beautiful portal and is covered with an intricate rib vaulting in Manueline style.

This decorative richness is the most notable feature of the Franciscan church, covering almost completely the roofs of the aisles, pillars, window frames and chapels and hiding the underlying mediaeval architecture.

The niches flanking this tree contain statues of St. Anne and St. Joachim (father and mother of Maria) and four Franciscan doctors who wrote about the Immaculate Conception.