Isshiteji is quite a well known temple in the Tennoji area of Osaka that is known primarily for its statues made from bones, but just across the road, and owned by the temple, is a very modern building that houses an experimental theater group and theater.
Part of the building seems to be what I would call a "chapel", and its name is Three Thousand Buddhas. When you go through the doors you see a large dome built in the interior, and on the exterior of the dome are golden buddhist statues. Not yet three thousand though. When enough donations have been made they will number three thousand.
The interior of the dome very much resembles a church with seats and an altar, behind which is a giant mural.
From the outside of the building you get no indication of what is inside, in fact it looks like a bank or an office building.