This is my current Minecraft project, and its turning out pretty cool so far. Its basically one huge greenhouse that contains multiple environments. There is also a House and a small Farm for Wheat, Sugarcane, and Pigs, you can find a larger Automatic Sugarcane Farm underground.

The Greenhouse Contains the following:

On the Surface Inside the Greenhouse:

House
Wheat Farm
Sugarcane Farm
Pig Farm
Cave Entrance

Underneath the Greenhouse:

Automatic Sugarcane Farm

Automatic Cactus Farm
Storage Room

Types of Environments Inside:

Woodland
Snow Tundra
Desert

Coming Soon:

Mine shaft

The Nether Environment

Feel free to mess around and add whatever you want too it, and I hope you enjoy :)