This is the underground cathedral of Tet1996 ( http://www.minecraft-bauideen.de/Unterirdische-Kathedrale ). Since the focus of his idea was of course on the interior, I have reproduced this above ground as a normal cathedral.

The reason is simply that you usually either have a good facade, or, like Tet1996, a good interior. I have tried here to get as much as possible both.

The rooms inside should be known from the original idea. They are from the pictures there as possible replicated (with small errors / own adjustments) and then just the outer facade was made new.

Towers can of course still be added. (If I do that, I send the result also gladly still after)

Instructions:

1. find/make a large space. (For example on a flat world)
2. take a good look at the interior and build :D :P.

3. build an exterior facade around it and then change it until you like it yourself.

Ready...

At pure construction time I have certainly sat 24h, but I'm also not the very fastest at building. :)