Port-Royal-des-Champs is a historical site located in the Île-de-France region of France, known for its former abbey and its role in the Jansenist movement during the 17th century. The site was originally a Cistercian monastery, which later became a center for Jansenism, a theological doctrine that emphasized grace and predestination. Today, Port-Royal-des-Champs is recognized for its beautiful gardens and the remnants of the abbey. The site also features a museum that showcases the history of the abbey and its significance in French religious and cultural life. Visitors can explore the tranquil surroundings and learn about its rich heritage.