It is a building of Romanesque origin from the end of the 12th century. It consists of three naves of equal height: the main one is Romanesque and the other two, which are Gothic, are headed by an apse. The octagonal belfry, also Gothic, was built during the 15th century and restored in 2002.
The church of San Lorenzo, the second most important in the city after of the Seu Vella (Old Cathedral) was twice a cathedral seat. The building is Romanesque in origin, from the end of the 12th century, with many additions from the Gothic period.
It has three naves of the same height: the main one is Romanesque, and the other two Gothic, each terminating in an apse. The octagonal bell tower, also Gothic, was built during the 15th century and restored in 2002.
Inside the church, four important Gothic altarpieces are conserved: San Lorenzo (the biggest), Santa Úrsula, San Pedro and Santa Lucía. The interior also houses a variety of works of art from the Diocesan Museum of Lleida, like the sculpture of the Virgin of the Ahijados (Godchildren), from of the Seu Vella (Old Cathedral), and the painting of Santa María de la Candelera (15th century), attributed to the painter Mateu Ferrer, depicting Saint Blas. This interesting church has two more features: the tomb of Ramón de Tárrega and the image of Sant Crist Trobat (Holy Christ Found).