Did you ever want to build a giant palace all out of glass? Well,
Seed Code: IceCream
X: 380 / Y: 80 / Z: -120
A big desert with very much sand and some lakes. If you need sand, you will find it there.
X: 230 / Y: 80 / Z: -40
The coal hole. Its a hole. With coal. Lots of coal. You can find about 80 blocks, just by entering the dungeon. Enough to burn lots of glass blocks.