Église St-Germain des Prés [3 Place St-Germain des Prés +33 155428133 http://www.eglise-sgp.org/] is the oldest Parisian church and is identified by its 11th century Romanesque architecture. Built on an older 6th century abbey, this church was the dominant place of worship until the construction of the Notre-Dame cathedral. Despite its age, the St-Germain church has been destroyed and reconstructed several times over the years. Hence, its architecture features a pastiche of other eras as well. For example, the church presents a Romanesque nave and square tower, a Gothic choir and a 19th century spire. Its oldest, untouched section is the Chapelle de St-Symphorien, which dates back to the time when the abbey stood here.