Reach out to the administrative assistant on the website and they can probably arrange it, especially for a group.
We just showed up one day and a priest gave us an amazing tour. Not sure if we just got lucky.
Not as a regular practice however if you were to call and ask with enough lead time and naturally not a service day, I'm certain they'd accommodate you in any way possible. They are great folks over there.
Any tour has to be requested through the church's administration.
Not sure but great?
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