What is the church for in the diamond version game

The church in hearthome is kinda important but no missions. The tower outside of Solaceon is where people pay homage to their or someone elses dead pokemon. And u do get a hm and a spell tag at the top.

It's not for missions or anything it's just there to honor the dead/sleeping Pokemon. And it's a Chapel. It's kinda important but you don't really do anything in it.

starwarsfan7 is correct!
but, if u go 2 the very top floor, a person gives u a tm or hm.

The church in Heartrome is practically just a building.

The tower outside Solaceon Town is were people pay there respects to Pokemon and on the top floor (I think) you can get a Spell Tag or a TM

Dead pokemon