Short answer: The big one on the left.
Long answer: Sometimes old buildings are quirky, and local customs can be hard to intuit. There are several ways to get into our sanctuary. Most people use the door on the southeast corner of the building, which is not the one closest to the parking lot. The stairs up to the closest door are uneven, so we tend to avoid them.
If you need to avoid stairs altogether, you can come in the building using the door in the corner of the courtyard between the sanctuary and the education building. Then turn immediately to the right to enter the sanctuary. This will bring you in from the front. Not the way most visitors want to make an entrance, I know, and we’re sorry about that. Unfortunately, this is the best solution we have at the moment. We’ll be so glad to welcome you that hopefully you won’t even notice!
See the visual below for reference.