That is an interesting point, that the architecture was meant to inspire people to view upwards. I find it so interesting that heaven was believed to be above, and hell below. And this architecture probably does have something to do with reinforcing this notion. What I find interesting is the fact that we have moved from the holiest of places being behind a thick curtain and only a few people were allowed there, to the holy place being open and light and inviting to everyone. This just makes the closeness of God more available to everyone.