It is probably the most popular church in Paris thanks to Disney. This is my third time visiting this church and it impresses me still every time. Well built churches are just timeless. You can walk up the church for a fee. :)
This was on top of our must see list. No, we didn’t get a lock and throw it on the river below. We’re just curious. We went by metro and stopped at Pont Neuf on Line 7. It was bit of a walk from the metro. Just look for the river and head towards that direction. The Louvre Museum is actually close by.