Yes, 3 days is generally considered the perfect amount of time to experience the highlights of Geneva without feeling rushed. On day one, you can focus on the city center, visiting the Jet d'Eau, the Flower Clock, and the historic Old Town (Vieille Ville) with its Saint Pierre Cathedral. Day two is ideal for exploring Geneva's international side by visiting the United Nations (Palais des Nations) and the Red Cross Museum, followed by a relaxing boat cruise on Lake Geneva. On your third day, the city’s excellent rail connections allow for a spectacular day trip to nearby attractions like Montreux and Chillon Castle, or even a quick trip across the border to Annecy, France. While you could easily spend a week using Geneva as a base for the Alps, 72 hours allows you to see the major landmarks, sample world-class Swiss chocolate and fondue, and soak in the cosmopolitan atmosphere of this lakeside global hub. It is a compact and efficient city, making it very rewarding for a short-term visit.