Hi!
This is the v1.0, so I'll make some update, you can make some feedback.
/! The Dunes are in Snow biome, you could change it with biome painter /!
www.minecraftforum.net/topic/1119044-tool-biome-painter-09-edit-your-minecraft-worlds-biomes/
I don't know if it's compatible with 1.4.

It's called Dunes Patates (that's means Potatoe Dunes), cause it was built on NPC town and I really think they have potatoes instead their noses '-_-.

You will find :

Casino
SPA
Museums
Old ruins
Patator's Statue (NPC Statue in fact...)
Strip Teese Club
Night Club (I probably will ad music in it)
Hotel
Restaurant
And various buldings

Thanks to Rapidzo who inspired me a lot for this.
You should check his amazing island :
www.planetminecraft.com/project/golden-palm-resort---startoff-steves-resort/

You can use it as you want, make what you want with it but don't say that you made it ;).
Enjoy!