It's a one-metre version of my low-poly world map (bigger version (the real images show the two-metre version))
It is quite easy to print. Just print each individual files. Use the last picture, which shows how the parts come together, to glue it together.
If you are not allowed to use nails or screws in your home, you can also use special double-sided tape (as I have been doing for a year now).
The exact dimensions are: 1,05m width x 0,51m height
Inspired from: Image Source
The author marked this model as their own original creation.