In the center of Paris near Chatelet, this tower is located in a small parc and is only accessible for visits 3 months in the year.
Every summer, Parisians get the chance to have a guided tour and, after a small climb, a panoramic view on all paris. Make sure to make a reservation online and arrive a few minutes before.
Square de la Tour Saint Jacques : Paris Metro Chatelet
Details and reservations here : www.desmotsetdesarts.com