it's a very very beautiful church as from inside and outside.
there was some admission cost when we tried to get in last time but all the times before I always went in for free. so not sure what the admission cost depends on - time of the day, day of the week or seasons.
there is also a light show that's highly advertised. we went for that (tickets were something like $12) but weren't really impressed. the set up is great but the scenario/story/length is too boring.