Now, I did use a very nice program called MCEdit to take care of most of the repetitive work, so it's not like I mined, crafted, and built this entire thing by hand. I did a ton of planning on graph paper, especially how to handle the various curves. All of the detail-work and parts-building was done in Minecraft proper (using the nice "new" creative mode), but I then used MCEdit to copy/paste/shift the bits around. I'm still not finished, but I figured I have enough so far to pique some interest.
There's also a catacombs level which leads to a large cavern that I'm not sure what I will do yet. I don't have any screenshots of those yet. Not that it would matter, since the catacombs are so dark that you can only see about 5 blocks in any direction, thanks to the darkening effects of being placed just over the void.
|A view from the nearby NPC village
|An external view of the sanctuary
|Pretty lights at night!
|Before I finished the sanctuary wall...
|Main hall at night
|Dome at night
|A view from the pews
|The sanctuary at night
|Perfect view of the sunset