This was a world that a few of my friends and I created -- just for fun. Some of the features are:

*Long Rollercoaster Railway
*Green Cottage and Mine
*Hanging Gardens (food + tree farm)
*Pyramid Railway Station
*Several other various mines
*Fully-stocked Warehouse inside the castle
*A Tree House/Fort

As you can see, there's quite a bit to explore and see in this map. We had a blast with this world. If enough people comment asking for download, I might change this to let you download it. Otherwise, it's private.