Yes; because they are not going there to pray exactly; they are still allowed to see a church and discover it!!
Can A Muslim Go Into A Catholic Church?
Yes they are allowed to go into it to see how others pray or they can just take a look, but since they're not going there to pray than thats totally fine.
Haram haram haram ... Going to see isn't doing any harm! Just don't worship there!
To go to church for a muslim is HARAM .