Hey, I have three quick questions.

I have a stock of self-made vector maps of major Italian cities, the maps also include street names and illustrated monuments on the maps.

Am I allowed to sell these through a stock site?
Is it better to start my own website and sell them through there?
Are there any copyright issues I need to keep in mind? (street names, monuments, etc)

I have been looking everywere for answers to my questions. Perhaps I'm not searching the right thing, ergo here I am! Hopefully you guys can help me.

Thanks in advance