This is a large project I started on my server to pass the time while my girlfriend is busy with college. Its a very large, land based structure with three tiers like a netherbrick/lava cake. Atop the final tier I plan to build some sort of building, but for now, what that building is hasn't been decided.

Sizes:
Foundation- 199 block diameter circle
Bottom Tier- 149 block diameter circle
Middle Tier- 99 block diameter circle
Top Tier- 49 block diameter circle

Current Materials List:
-Netherbrick
-Nether Fence
-Lava Source
-Obsidian
-Iron Bars
-Netherrack
-Wither Skull
-Gold Block
-Soul Sand
-Glowstone

Additional Notes

When you look at the photo, it appears to have 4 layers, however that very bottom layer is supposed to be like the foundation.