I've completed a project I started a few months ago, some abandoned / un-maintenanced looking sewers.
The sewers are decked out with vines, stonebricks, mossybrick, different ores, different stone stairs, half slabs, etc.

Every block was placed / edited by hand. World Edit was used to make the frame, but I wanted no copied designs on the interior. Every block sequence and combination is different from the next section.

The dimensions of the structure are....
85L x 69W x 17H


Build Time was maybe... 24hrs total over the course of a few months.
Hope you like it, please Diamond and Follow for more! :D

- 2019 Update
Re-uploaded the schematic file which seems to have been removed.
Schematic is 99,705 blocks.
Recommended to use ASyncWorldEdit when pasting, but WorldEdit works fine on a machine/server with decent CPU.
- Uploaded new photos.