I'm a Christian.

If you are unfamiliar with Christian beliefs, the first two commandments warn against having other gods and practicing idolatry (Exodus 20:1-6).

If you must have an altar, the best place is in your own home. This is where I would prefer that you keep them. You may notice that there are some strewn around here and there. These are from before I made this rule, or are owned by my co-mayor Giai.