Crazy Concrete and Painted Structure

Minecraft Seed: -739183062014127369

Go to coordinates -433, 71, -243. In the ground you will find a unique structure made up of colorful concrete, glass and painted blocks.

I saw this and thought my friend had put it there in Creative mode, but I copied the seed and was confused to find that it is real. Could I please have help detecting it? Check the seed out.