My wife is from Italy, so I printed out a topo of the valley where she grew up. It took me a long time to figure out how to change to the European projection in the software I was using, and I didn't write down how I did it; unfortunately I'm not sure I can figure out it again! There's a digital elevation TIFF of the whole EU available online, even Czechia! If you want to make it a project, I can point you in the right direction and give you some pointers on converting to a obj file to print. I found a couple websites that went through the process, but I didn't find their directions very complete and had to figure a lot out myself.