The church was originally built as a circular temple, a design choice often associated with the Knights Templar or the Holy Sepulchre architecture, though its exact origin remains debated.
It is one of the few surviving Romanesque churches in Spain that maintains its original circular layout rather than shifting to a traditional Latin cross plan.
The interior murals were rediscovered during 20th-century restoration works, as they had been covered by layers of plaster and altarpieces for centuries.
The main portal features a series of archivolts supported by columns with stylized capitals depicting foliage and geometric patterns.
During the medieval period, its proximity to the city walls made it a strategic point for both spiritual and defensive purposes.
The church houses a notable collection of religious imagery, including an 18th-century altarpiece.
The Iglesia de San Marcos in Salamanca is a rare example of a Romanesque circular church, constructed during the 12th century. Its distinctive design is characterized by a ground plan featuring three semi-circular apses and a circular nave. The interior retains significant mural paintings from the 14th century, which depict various religious themes. The structure served as a parish church for one of the original parishes of the city established after the Reconquista. It was once physically integrated into the city's old defensive wall, explaining its compact and fortress-like exterior. Much of the original stonework, including the corbels and portal arches, reflects the transition between late Romanesque and early Gothic architectural motifs.
The view from the Plaza de San Marcos looking back toward the circular apse wall.
Walk around the exterior to view the masonry of the three apses, which is best seen from the small square surrounding the building.
Look closely at the corbels under the eaves, as they feature unique human and animal carvings typical of Romanesque stonework.
Do not attempt to enter during scheduled liturgical services if you are not participating in the ceremony.
Often closed for visits during daily mass services.
Maintain a quiet demeanor and remove hats upon entering.
