Can you identify this cathedral?

[bmparent]

Hi all,

I found this picture recently in my parent's house. It's of my grandmother (right) and someone else I don't recognize. I'm looking for some help identifying this cathedral/church. It could be in the US, but I don't know how many domes like this there are here in the US. At first I thought it was Il Duomo in Florence, but it doesn't seem to match. I've checked out structures in Naples, Rome and in Abruzzo which is my grandmother's region. Thanks for checking it out!

[darkerhorse]

Have you looked here?

https://www.beweb.chiesacattolica.it/UI ... &dominio=2

[bmparent]

Amazing, thanks!