I actually have not done that much of it yet but I currently am working on it everytime I can which is almost everyday. Please look forward to the release of the full Adventure.
I am creating this map in a 2:3 scale. That means that the trees in the actual Pokemon game have a width of 2 blocks but I make them 3 blocks wide because if you build a 2x2 three it looks like shit.
For the creation of the houses I looked at the outside and made it that they have the right scale so sometimes the room inside the house is a bit small but I do not care because I think that it gives you more of this Pokemon feeling if the houses have the right size.

I uploaded an early version of this map. It isn't finished yet so please don't bitch about it too much. I will add all the Adventure Stuff at the end.

The map works/looks best if you use RileyVace's Pokecraft Texture Pack: www.planetminecraft.com/texture_pack/pokecraft-a-pokemon-texture-pack/

Things I have done so far(I want to finish the structure of the whole map before I do the details):

Pallet Town
Route 1
Viridian City
Route 2(with the Viridian Forest)
Pewter City
Route 3
Route 4(Mt. Moon isn't finished yet)
Cerulean City
Route 5
Saffron City
Route 6
Vermilion City
Route 7
Route 10
Route 11

Additional Notes