Has anyone come across a poster size picture of the world? A realistic one that can be studied, similar to the picture attached.

I have come across a few that are for decorative purposes but not found a normal one yet.

You could try      Suriwong  books  downtown or the Education Mall . The Education Mall is on the road to Sankampaeng  close to the outer ring road , its beside the big driving range . I have seen globes there and they do sell to teachers and schools also to private individuals .

Suriwong had them as recently as last week.

We've installed the National Geographic wall-sized map of the world mural in two homes and three offices over the years.  It comes in three pieces and is installed like wallpaper.  I see where they don't ship outside the U.S. and Canada, but if you know someone who can forward it to you, you're in luck.  It really makes a statement in a room and is surprisingly easy to install if you've had a little experience installing wallpaper:

 

https://shop.nationalgeographic.com/collections/world-maps