1. Notre-Dame Cathedral — 4th arr. · Île de la Cité
Paris's great Gothic cathedral, reopened in 2024 and free to enter.
Notre-Dame reopened in December 2024 after the 2019 fire, and its restored nave, chapels and rose windows are brighter than they have been in generations. Entry is free.
Reserve a free time slot online to skip most of the line, or go at opening time. Masses are open to everyone, and there are often free organ recitals — check the cathedral's calendar.
Good to know: The tower climb is paid, but the view of the façade from the square and from Square Jean XXIII behind the cathedral is free.
6 Parvis Notre-Dame – Place Jean-Paul II, 75004 Paris, France