Christians! About Christian temples in this world ?

I have planned my life in a following way : All the life I follow Jesus, I work for money, after that I travel to different country, work on the same work but in foreign country and the following questions are :
1. What country or actually where do the Christian temples exist? By temple I mean, when someone says : “…you cannot be 100% pure from sins, if want to then ya gotta go to some mountain temple to live with The Christians” , yes I want some Christian monks temple address or so.
2. I will be ready when I go to temple, but my question is that what do the monks eat, since I am here on the “ground” I eat only using money, so how do they?
3. What are the Holy Countries where a man is allowed to enter. Are there any requirements ?
4. Extra details about Christian monks, temples, addresses, mountain, any books or sites that describe it etc. May God Bless You All !
Then what about the saying that “Go live in mountain to be pure”. Stay away from Earthly doings. Get to Be The True Christian and Then return distributing The Faith !