Provins

Provins is a town in the Ile-de-France region of north-central France. It is known for its medieval fortifications and well-preserved city walls. The ramparts were constructed between the 11th and 13th centuries. Today you can walk along more than 3,900 feet of ramparts, parts of which have been restored, that still circle the Upper Town, though they used to stretch for more than three miles. You'll also see two fortified gates that were constructed in the 14th century. Another important sight is Caesar's Tower, which was built between 1152 and 1181 and served as both a watchtower and a prison. Today the bells of Saint Quiciace Collegiate Church are located in the tower. A display here gives visitors a glimpse at everyday life at the tower 800 years ago. 
Other points of interest in Provins include the Tithe Barn, which once served as a covered market and is now a museum dedicated to merchant life in Provins. There are also extensive caves and underground cellars in the Provins area. Ancient graffiti and other artifacts have helped explain what the cellars were used for, though some of the sections remain a mystery. 

Practical Info

Provins is located 57 miles southeast of Paris and can be reached using route A4 or by train from the Paris Gare de l'Est station. Opening hours and ticket prices vary by attraction.