Vatican City (or the Holy See) 

Official website of Vatican City, a papal residence, HQ of the entire Roman Catholic Church worldwide. I'm an Anglican myself, married to an Irish Catholic. I think that explains a lot. International English site optional.
कीवर्ड्स: ईसाई धर्म, लिंक्स, vatican, holy see, roman catholic church, headquarters, papal residence, official, website