We visited Notre Dame on of our meandering days in Paris. After doing all the big ticket stuff (Eiffel, Louvre, Versailles), this became a bit of a “whatever” for everyone. Especially the kids, who had already been to what felt like the same type of place several times in the last few months (Alhambra, Seville Cathedral, La Sagrada Familia).
Luckily lines were fairly short and we toured and moved on quickly!
We also visited the Treasury inside the church which houses many Holy objects.