Your fascinating journey commences in front of the majestic Notre-Dame Cathedral, a Gothic architectural marvel dating back to the 15th century. Immerse yourself in the hair-raising stories and demonic legends that envelop its grand facade, and discover the enigmatic forces that influenced its construction. Then, you'll make your way to Kleber Square, where the tragic story of Frau Troffea comes to life. In 1518, Frau Troffea's uncontrollable dancing sparked a frenzy that resulted in the deaths of almost 400 people due to heart attacks, strokes, and exhaustion. Investigate the theories behind this peculiar occurrence while absorbing the eerie atmosphere of the square.