Google Product Forums
Re: Adding a business or Commuinty Organisation to a map
ehg May 13, 2012 12:49 AM
Posted in group: Google Maps

Categories: How do I... ? : Maps : Windows : Internet Explorer :

it depends on the country.
In most countries (all of those suported by Google Places) you can add it as a place entry.

see also this help site: 

Place labels on Google Maps.

In some countries not supported  by Google Places you can try adding the church through MapMaker.
Hope this helps
Have a nice weekend.
Best Regards
ehg