This is a town diorama – Original name “Faller Stadt”. The model name is translated as “Town Diorama” but I included RPG in the title as it looks just like any RPG town in Jrpg and anime.
Let’s make it clear that I had no idea if that translation is correct since Google translation is known to be 70% wrong most of the time.
The latest anime example that has buildings such as these are Hai to Gensou no Grimgar, Kono Subarashii Sekai ni Shukufuku wo! and the famous Sword Art Online.
Instruction guide recommended building this model using an 80gsm inkjet paper, which is your normal printing paper. Preferable in the size of A5.