Can non-Catholics, non-religious people visit Vatican City?

Of course you can! And you will always be welcome. Please just follow the rules, like everyone says in their answers. The way we catholics see it, those architectural, historical and artistic wonders belong to ALL mankind, not only to our Church. read more

Non-Catholics can attend the various religious services, talks, etc. that are held at the Vatican (and pretty much any church in the world that they wish to see), too. The only restriction that is particular to non-Catholics is that, if they attend a Mass, they are asked to refrain from receiving communion. read more

Vatican City is certainly open to visit for tourists at large; as you perhaps know, there is no actual boundary between Rome and Vatican City, meaning that nobody checks the papers of those who move from one to the other. read more

There's a scanner that can tell which people are non-christians and which aren't. It sets off an alarm and bouncers remove that person. read more