Church of Santa Maria in Solario, Romanesque church in Brescia, Italy.

The Church of Santa Maria in Solario is a compact Romanesque chapel with a square plan and two superimposed rooms linked by a narrow stair cut into the south wall. The lower room has four cross vaults resting on a reused Roman marble altar inscribed "DEO SOLI / RES PVBL(ICA)"; the upper room is covered by a hemispherical dome and three small apses cut into the east wall. The interior walls and ceiling are painted with horizontal bands of frescoes by Floriano Ferramola and his workshop, and a freestanding glass case stands centrally on the stone floor.

Built around the mid-12th century as a two-storey reliquary chapel of the Santa Giulia monastery, its dating rests on architectural analysis; a doubtful document attests it in 1203. The upper hall served as an oratory and a station in monastic processions. Suppressed in 1797, it was recovered in the later 20th century and joined the Santa Giulia Museum in 1998.

The upper hall served as a station on the monastery's liturgical processions, where the treasure of crosses and reliquaries was carried in and shown. Three small apses cut into the east wall held altars to Saints Benedict, Scholastica and Agatha. The lower hall has no painted decoration at all.

Access to the church is through the Santa Giulia Museum, where guided tours explain its architecture and religious importance. Visitors should allow time for the visit and be prepared to climb several levels connected by stairs.

The lower level houses a Roman altar dedicated to the sun god, revealing how ancient religious elements were integrated into medieval sacred architecture. This layering of periods shows the long history of the site and how worshippers gathered there across centuries.