Start your tour at the remnants of the Wall of Philippe II Augustus, one of the oldest fortifications in Paris built in the late 12th century to protect the city. These ancient walls give a glimpse into the medieval defenses of Paris.

Visit the Collège des Bernardins, a restored medieval college that now serves as a cultural center. Originally built in the 13th century for Cistercian monks, it showcases Gothic architecture and hosts various exhibitions and lectures.

Continue to the iconic Cathédrale Notre-Dame de Paris. Although the interior is currently under restoration, the cathedral's exterior remains a stunning example of French Gothic architecture, with its detailed façades and flying buttresses.

Explore Sainte-Chapelle, known for its stunning stained glass windows that depict 1,113 scenes from the Old and New Testaments. Built in the 13th century, it represents the height of Gothic architectural achievement.

Conclude your tour at the medieval Clock Tower (Tour de l'Horloge), part of the Conciergerie complex. It features the oldest public clock in Paris, installed in 1370, and symbolizes the city's long-standing technological and artistic prowess.