The parish Church of St. Michael Archangel in Castel Madama was built in 1775 on the site of a 13th century oratory dedicated to the same saint. The façade was completed in 1807. The exterior is imposing, albeit made of simple materials, as is the interior, grandiose although with little decoration. The church was restored in 1942, during which time new ornamental decorations were added, like the frescoes of the four evangelists by the painter Oscar Grottini beneath the great cupola, whose rose windows were also partially restored. The first chapel on the left is particularly interesting for its fine stucco work, as is the wall on the right hand side where the third altar is placed. The stucco decoration of the chapel is an example of a fairly widespread model common in the 18th century; the architectural design of arched tympanum with protruding triangles at the sides copies a famous Borromini composition used on the Palazzo Barberini (with windows on the façade and portals of the salon). The white stucco decoration of the wall behind the third altar has neoclassical ornamental elements, which create a sober, balanced look.