We had the privilege of visiting Our Lady of Akita in Japan last May. You will be surprised that they do remove shoes going in the church.
The chapel of our Lady is set on top of a hill in a remote province. We took a 4 hour bullet train ride, then a 20 minute bus ride, then a 15 minute hike up a hill. If it was not for the cross on the roof, it will just look like another temple.
Inside, they have a recieving area. on the side, they have shelves with slippers. you will need to take off your shoes, leave them by the door and wear the slippers or walk in just your socks. Our priest said mass there in the slippers…
looking forward from the main entrance, there are three chambers: the main chamber where the altar, tabernacle and sacristry are, on the right is a small chamber that leads to the bathrooms, and on the left is a small chamber where the statue of Our Lady is. all of them are connected, only separated by walls and sliding paperdoors.
i think they open all sliding doors when there is a large crowd for mass, otherwise, these are closed and mass is said in the main chamber only.
this chapel is right beside a monastary of nuns, i forgot what order though.