Its outstanding features are the entrance, the slender brick nave and the bell tower's tile ornamentation from the 18th century. Its design recalls the Giralda Tower in Seville.
The current building, dating from the 18th century, is built over an old Mudejar church. Its entrance is one of the most original examples of Andalusian Baroque architecture, notable for being sheltered by an unusually high arch. Inside three is an interesting archaeological collection, including an exceptional marble Roman head. It stands in Plaza de Santa María square, next to the marble monument to Écija's patron saints.