Fontaine Saint-Sulpice, Paris

Even without being a pivotal location in Dan Browns "DaVinci Code" where the Church contains the "Rose Line", it's certainly worth a visit. The line is there, but it was created for other things that are interesting too. The square around it. The mismatched towers, the art in the building and the open airy feel make it an excellent stop.

Massive, active Catholic Church located just a few blocks from the Jardin Luxembourg. Lovely, airy interior. Signs at front of the church indicate that there is a wheelchair entrance on the side of the church on Rue Palatine. However, I was unable to find it (likely due to the construction on the side of the church).

It is a spectacular church and a pleasure to go and hear summer Organ concerts on Sundays. Its17th century architecture is absolutely amazing and it houses the largest organ in France! I highly recommend a visit although there always seems to be some construction going on. Kirk Regalia Lauderdale by the Sea, Florida U.S.A.

It’s absolutely a beautiful and magnificent church. It’s huge inside with amazing dome and sculptures. It’s underrated and doesn’t not get much fame as it should have.

As an atheist from a Protestant background in Northern Ireland i never really had a reason to visit many cathedrals. So when I was on a walk through Paris and passed it I stuck my head in and was blown away by this place. Beautiful architecture and it's free to dander in (there was even a mass going in when I was there). If you're in the area you should definitely check it out.