Earth! by Lentebriesje (for MT!)
I intend to update this map to address minor issues with the map going forward. Make sure you're using the latest version if you start a new world with this map.
As of now, I do not know if anyone is hosting a public world with this map. If this changes, I will update this post with locations of where you can go and visit this world without having to download the entire map yourself.
How did I make this map?
I didn't. I downloaded a copy of the MC map made by Lentebriesje. He used 1:1500 scale topo data of the earth and used worldpainter to decorate this map, and created an MC map out of it.
Then I converted and processed this map data to get a decorated map. I used tools like mcimport, mtmapprune, but also the MC client to do this. It took me several weeks to get the result. Some parts of the process take 4+ days of computing time.