One of the Deep Blue Structures from Katters Structures.
The Deep Blue Labs are big squerical Citys half in Prismarin and half Glas.
The blocks used to build can all be obtained by Aquatic Mobs and Glas.
The center contain a lot of Redstone contraptions.
The Color palette is blueish green tones.
The main blocks are :
chests have a change to contain a Enlightning Rod
Bookshelf can contain Enchanted Books with:
Deep Blue Labs, will natural spawn in the Deep Blue Plains Biome.
The Inhabitants of these Citys are called "The Nox" and are the ancestors of the Minecraft Villagers.