A firsthand travel guide to visiting Paris’ most iconic landmarks, including Notre Dame, the Louvre, Sainte-Chapelle, the Panthéon, Palais Garnier, Sacré-Cœur, and a Seine River cruise. The post shares practical, real-world insights on ticketing, lines, crowd flow, and what to expect at each site, along with observations to help travelers plan a smoother, more informed visit.