The Basilica of Saint-Quentin is a Romanesque church located in the town of Saint-Quentin, France. It was built between the 12th and 13th centuries and is known for its impressive architecture, including a striking façade and intricate stained glass windows. The basilica is dedicated to Saint Quentin, a Christian martyr and the patron saint of the town. This historical site is recognized as a significant example of medieval architecture and has been classified as a monument historique since 1840. The basilica features a large nave, beautiful chapels, and a remarkable bell tower, making it a popular destination for both tourists and pilgrims.